Optical imaging system

ABSTRACT

An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially disposed in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system; and a spacer disposed between the sixth and seventh lenses, wherein the optical imaging system satisfies 0.5&lt;S6d/f&lt;1.4, where S6d is an inner diameter of the spacer, f is an overall focal length of the optical imaging system, and S6d and f are expressed in a same unit of measurement.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.17/099,021 filed on Nov. 16, 2020, which is a continuation of U.S.patent application Ser. No. 16/424,535 filed on May 29, 2019, now U.S.Pat. No. 11,002,943 issued on May 11, 2021, which claims the benefitunder 35 USC 119(a) of Korean Patent Application Nos. 10-2018-0061409filed on May 29, 2018, and 10-2018-0106170 filed on Sep. 5, 2018, in theKorean Intellectual Property Office, the entire disclosures of which areincorporated herein by reference for all purposes.

BACKGROUND 1. Field

This application relates to an optical imaging system.

2. Description of Related Art

Recently, mobile communications terminals have been provided with cameramodules, enabling video calling and image capturing. In addition, asutilization of the camera modules mounted in the mobile communicationsterminals has increased, camera modules for the mobile communicationsterminals have gradually been required to have high resolution andperformance.

Therefore, the number of lenses included in the camera module hasincreased. However, since the mobile communications terminal in whichthe camera module is mounted tends to be miniaturized, it is verydifficult to arrange the lenses in the camera module.

Therefore, research into technology capable of performing aberrationcorrection to implement high resolution and arranging a plurality oflenses in a limited space has been ongoing.

SUMMARY

This Summary is provided to introduce a selection of concepts in asimplified form that are further described below in the DetailedDescription. This Summary is not intended to identify key features oressential features of the claimed subject matter, nor is it intended tobe used as an aid in determining the scope of the claimed subjectmatter.

In one general aspect, an optical imaging system includes a first lens,a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens,and a seventh lens sequentially disposed in numerical order along anoptical axis of the optical imaging system from an object side of theoptical imaging system toward an imaging plane of the optical imagingsystem; and a spacer disposed between the sixth and seventh lenses,wherein the optical imaging system satisfies 0.5<S6d/f<1.4, where S6d isan inner diameter of the spacer, f is an overall focal length of theoptical imaging system, and S6d and f are expressed in a same unit ofmeasurement.

The optical imaging system may further satisfy 0.5<S6d/f<1.2.

The optical imaging system may further satisfy 0.1<L1w/L7w<0.3, whereL1w is a weight of the first lens, L7w is a weight of the seventh lens,and L1w and L7w are expressed in a same unit of measurement.

The optical imaging system may further satisfy 0.4<L1TR/L7TR<0.7, whereL1TR is an overall outer diameter of the first lens, L7TR is an overallouter diameter of the seventh lens, and L1TR and L7TR are expressed in asame unit of measurement.

The optical imaging system may further satisfy 0.5<L1234TRavg/L7TR<0.75,where L1234TRavg is an average value of overall outer diameters of thefirst to fourth lenses, L7TR is an overall outer diameter of the seventhlens, and L1234TRavg and L7TR are expressed in a same unit ofmeasurement.

The optical imaging system may further satisfy0.5<L12345TRavg/L7TR<0.76, where L12345TRavg is an average value ofoverall outer diameters of the first to fifth lenses, L7TR is an overallouter diameter of the seventh lens, and L12345TRavg and L7TR areexpressed in a same unit of measurement.

The optical imaging system may further satisfy0.1<(1/f1+1/f2+1/f3+1/f4+1/f5+1/f6+1/f7)*f<0.8, where f1 is a focallength of the first lens, f2 is a focal length of the second lens, f3 isa focal length of the third lens, f4 is a focal length of the fourthlens, f5 is a focal length of the fifth lens, f6 is a focal length ofthe sixth lens, f7 is a focal length of the seventh lens, f is anoverall focal length of the optical imaging system, and f1, f2, f3, f4,f5, f6, f7, and f are expressed in a same unit of measurement.

The optical imaging system may further satisfy0.1<(1/f1+1/f2+1/f3+1/f4+1/f5+1/f6+1/f7)*TTL<1.0, where f1 is a focallength of the first lens, f2 is a focal length of the second lens, f3 isa focal length of the third lens, f4 is a focal length of the fourthlens, f5 is a focal length of the fifth lens, f6 is a focal length ofthe sixth lens, f7 is a focal length of the seventh lens, TTL is adistance along the optical axis from an object-side surface of the firstlens to the imaging plane, and f1, f2, f3, f4, f5, f6, f7, and TTL areexpressed in a same unit of measurement.

The optical imaging system may further satisfy 0.2<TD1/D67<0.8, whereTD1 is a thickness along the optical axis of the first lens, D67 is adistance along the optical axis from an object-side surface of the sixthlens to an image-side surface of the seventh lens, and TD1 and D67 areexpressed in a same unit of measurement.

The imaging plane may be an imaging plane of an image sensor, and theoptical imaging system may further satisfy TTL 6.00 mm and0.6<TTL/(2*IMG HT)<0.9, where TTL is a distance along the optical axisfrom an object-side surface of the first lens to the imaging plane ofthe image sensor, IMG HT is one-half of a diagonal length of the imagingplane of the image sensor, and TTL and IMG HT are expressed in mm.

The optical imaging system may further satisfy 0.2<ΣSD/ΣTD<0.7, whereΣSD is a sum of air gaps along the optical axis between the first toseventh lenses, ΣTD is a sum of thicknesses along the optical axis ofthe first to seventh lenses, and ΣSD and ΣTD are expressed in a sameunit of measurement.

The optical imaging system may further satisfy0<min(f1:f3)/max(f4:f7)<0.4, where min(f1:f3) is a minimum value ofabsolute values of focal lengths of the first to third lenses,max(f4:f7) is a maximum value of absolute values of focal lengths of thefourth to seventh lenses, and min(f1:f3) and max(f4:f7) are expressed ina same unit of measurement.

The optical imaging system may further satisfy 0.4<ΣTD/TTL<0.7, whereΣTD is a sum of thicknesses along the optical axis of the first toseventh lenses, TTL is a distance along the optical axis from anobject-side surface of the first lens to the imaging plane, and ΣTD andTTL are expressed in a same unit of measurement.

The optical imaging system may further satisfy 0.81<f12/f123<0.96, wheref12 is a composite focal length of the first and second lenses, f123 isa composite focal length of the first to third lenses, and f12 and f123are expressed in a same unit of measurement.

The optical imaging system may further satisfy 0.6<f12/f1234<0.84, wheref12 is a composite focal length of the first and second lenses, f1234 isa composite focal length of the first to fourth lenses, and f12 andf1234 are expressed in a same unit of measurement.

The second lens may have a positive refractive power, and the third lensmay have a negative refractive power.

The fifth lens may have a negative refractive power, and a paraxialregion of an object-side surface of the fifth lens may be concave orconvex.

The fifth lens may have a negative refractive power, and a paraxialregion of an image-side surface of the fifth lens may be concave orconvex.

A paraxial region of an object-side surface of the sixth lens may beconcave or convex.

A paraxial region of an object-side surface of the seventh lens may beconcave.

Other features and aspects will be apparent from the following detaileddescription, the drawings, and the claims.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a view illustrating a first example of an optical imagingsystem.

FIG. 2 illustrates aberration curves of the optical imaging system ofFIG. 1 .

FIG. 3 is a view illustrating a second example of an optical imagingsystem.

FIG. 4 illustrates aberration curves of the optical imaging system ofFIG. 3 .

FIG. 5 is a view illustrating a third example of an optical imagingsystem.

FIG. 6 illustrates aberration curves of the optical imaging system ofFIG. 5 .

FIG. 7 is a view illustrating a fourth example of an optical imagingsystem.

FIG. 8 illustrates aberration curves of the optical imaging system ofFIG. 7 .

FIG. 9 is a view illustrating a fifth example of an optical imagingsystem.

FIG. 10 illustrates aberration curves of the optical imaging system ofFIG. 9 .

FIG. 11 is a view illustrating a sixth example of an optical imagingsystem.

FIG. 12 illustrates aberration curves of the optical imaging system ofFIG. 11 .

FIG. 13 is a view illustrating a seventh example of an optical imagingsystem.

FIG. 14 illustrates aberration curves of the optical imaging system ofFIG. 13 .

FIG. 15 is a view illustrating an eighth example of an optical imagingsystem.

FIG. 16 illustrates aberration curves of the optical imaging system ofFIG. 15 .

FIG. 17 is a view illustrating a ninth example of an optical imagingsystem.

FIG. 18 illustrates aberration curves of the optical imaging system ofFIG. 17 .

FIG. 19 is a view illustrating a tenth example of an optical imagingsystem.

FIG. 20 illustrates aberration curves of the optical imaging system ofFIG. 19 .

FIG. 21 is a view illustrating an eleventh example of an optical imagingsystem.

FIG. 22 illustrates aberration curves of the optical imaging system ofFIG. 21 .

FIG. 23 is a view illustrating a twelfth example of an optical imagingsystem.

FIG. 24 illustrates aberration curves of the optical imaging system ofFIG. 23 .

FIG. 25 is a view illustrating a thirteenth example of an opticalimaging system.

FIG. 26 illustrates aberration curves of the optical imaging system ofFIG. 25 .

FIG. 27 is a view illustrating a fourteenth example of an opticalimaging system.

FIG. 28 illustrates aberration curves of the optical imaging system ofFIG. 27 .

FIG. 29 is a view illustrating a fifteenth example of an optical imagingsystem.

FIG. 30 illustrates aberration curves of the optical imaging system ofFIG. 29 .

FIG. 31 is a view illustrating a sixteenth example of an optical imagingsystem.

FIG. 32 illustrates aberration curves of the optical imaging system ofFIG. 31 .

FIG. 33 is a view illustrating a seventeenth example of an opticalimaging system.

FIG. 34 illustrates aberration curves of the optical imaging system ofFIG. 33 .

FIG. 35 is a view illustrating an eighteenth example of an opticalimaging system.

FIG. 36 illustrates aberration curves of the optical imaging system ofFIG. 35 .

FIG. 37 is a view illustrating a nineteenth example of an opticalimaging system.

FIG. 38 illustrates aberration curves of the optical imaging system ofFIG. 37 .

FIG. 39 is a view illustrating a twentieth example of an optical imagingsystem.

FIG. 40 illustrates aberration curves of the optical imaging system ofFIG. 39 .

FIG. 41 is a view illustrating a twenty-first example of an opticalimaging system.

FIG. 42 illustrates aberration curves of the optical imaging system ofFIG. 41 .

FIG. 43 is a view illustrating a twenty-second example of an opticalimaging system.

FIG. 44 illustrates aberration curves of the optical imaging system ofFIG. 43 .

FIG. 45 is a view illustrating a twenty-third example of an opticalimaging system.

FIG. 46 illustrates aberration curves of the optical imaging system ofFIG. 45 .

FIG. 47 is a view illustrating a twenty-fourth example of an opticalimaging system.

FIG. 48 illustrates aberration curves of the optical imaging system ofFIG. 47 .

FIG. 49 is a view illustrating a twenty-fifth example of an opticalimaging system.

FIG. 50 illustrates aberration curves of the optical imaging system ofFIG. 49 .

FIG. 51 is a view illustrating a twenty-sixth example of an opticalimaging system.

FIG. 52 illustrates aberration curves of the optical imaging system ofFIG. 51 .

FIG. 53 is a view illustrating a twenty-seventh example of an opticalimaging system.

FIG. 54 illustrates aberration curves of the optical imaging system ofFIG. 53 .

FIGS. 55 and 56 are cross-sectional views illustrating examples of anoptical imaging system and a lens barrel coupled to each other.

FIG. 57 is a cross-sectional view illustrating an example of a shape ofa rib of a seventh lens.

FIG. 58 is a cross-sectional view illustrating an example of a seventhlens.

Throughout the drawings and the detailed description, the same referencenumerals refer to the same elements. The drawings may not be to scale,and the relative size, proportions, and depiction of elements in thedrawings may be exaggerated for clarity, illustration, and convenience.

DETAILED DESCRIPTION

The following detailed description is provided to assist the reader ingaining a comprehensive understanding of the methods, apparatuses,and/or systems described herein. However, various changes,modifications, and equivalents of the methods, apparatuses, and/orsystems described herein will be apparent after an understanding of thedisclosure of this application. For example, the sequences of operationsdescribed herein are merely examples, and are not limited to those setforth herein, but may be changed as will be apparent after anunderstanding of the disclosure of this application, with the exceptionof operations necessarily occurring in a certain order. Also,descriptions of features that are known in the art may be omitted forincreased clarity and conciseness.

The features described herein may be embodied in different forms, andare not to be construed as being limited to the examples describedherein. Rather, the examples described herein have been provided merelyto illustrate some of the many possible ways of implementing themethods, apparatuses, and/or systems described herein that will beapparent after an understanding of the disclosure of this application.

Throughout the specification, when an element, such as a layer, region,or substrate, is described as being “on,” “connected to,” or “coupledto” another element, it may be directly “on,” “connected to,” or“coupled to” the other element, or there may be one or more otherelements intervening therebetween. In contrast, when an element isdescribed as being “directly on,” “directly connected to,” or “directlycoupled to” another element, there can be no other elements interveningtherebetween.

As used herein, the term “and/or” includes any one and any combinationof any two or more of the associated listed items.

Although terms such as “first,” “second,” and “third” may be used hereinto describe various members, components, regions, layers, or sections,these members, components, regions, layers, or sections are not to belimited by these terms. Rather, these terms are only used to distinguishone member, component, region, layer, or section from another member,component, region, layer, or section. Thus, a first member, component,region, layer, or section referred to in examples described herein mayalso be referred to as a second member, component, region, layer, orsection without departing from the teachings of the examples.

Spatially relative terms such as “above,” “upper,” “below,” and “lower”may be used herein for ease of description to describe one element'srelationship to another element as shown in the figures. Such spatiallyrelative terms are intended to encompass different orientations of thedevice in use or operation in addition to the orientation depicted inthe figures. For example, if the device in the figures is turned over,an element described as being “above” or “upper” relative to anotherelement will then be “below” or “lower” relative to the other element.Thus, the term “above” encompasses both the above and below orientationsdepending on the spatial orientation of the device. The device may alsobe oriented in other ways (for example, rotated by 90 degrees or atother orientations), and the spatially relative terms used herein are tobe interpreted accordingly.

The terminology used herein is for describing various examples only, andis not to be used to limit the disclosure. The articles “a,” “an,” and“the” are intended to include the plural forms as well, unless thecontext clearly indicates otherwise. The terms “comprises,” “includes,”and “has” specify the presence of stated features, numbers, operations,members, elements, and/or combinations thereof, but do not preclude thepresence or addition of one or more other features, numbers, operations,members, elements, and/or combinations thereof.

Thicknesses, sizes, and shapes of lenses illustrated in the drawings mayhave been slightly exaggerated for convenience of explanation. Inaddition, the shapes of spherical surfaces or aspherical surfaces of thelenses described in the detailed description and illustrated in thedrawings are merely examples. That is, the shapes of the sphericalsurfaces or the aspherical surfaces of the lenses are not limited to theexamples described herein.

Numerical values of radii of curvature, thicknesses of lenses, distancesbetween elements including lenses or surfaces, effective aperture radiiof lenses, focal lengths, and diameters, thicknesses, and lengths ofvarious elements are expressed in millimeters (mm), and angles areexpressed in degrees. Thicknesses of lenses and distances betweenelements including lenses or surfaces are measured along the opticalaxis of the optical imaging system.

The term “effective aperture radius” as used in this application refersto a radius of a portion of a surface of a lens or other element (anobject-side surface or an image-side surface of a lens or other element)through which light actually passes. The effective aperture radius isequal to a distance measured perpendicular to an optical axis of thesurface between the optical axis of the surface and the outermost pointon the surface through which light actually passes. Therefore, theeffective aperture radius may be equal to a radius of an optical portionof a surface, or may be smaller than the radius of the optical portionof the surface if light does not pass through a peripheral portion ofthe optical portion of the surface. The object-side surface and theimage-side surface of a lens or other element may have differenteffective aperture radii.

In this application, unless stated otherwise, a reference to the shapeof a lens surface means the shape of a paraxial region of the lenssurface. A paraxial region of a lens surface is a central portion of thelens surface surrounding the optical axis of the lens surface in whichlight rays incident to the lens surface make a small angle θ to theoptical axis and the approximations sin θ≈θ, tan θ≈θ, and cos θ≈1 arevalid.

For example, a statement that the object-side surface of a lens isconvex means that at least a paraxial region of the object-side surfaceof the lens is convex, and a statement that the image-side surface ofthe lens is concave means that at least a paraxial region of theimage-side surface of the lens is concave. Therefore, even though theobject side-surface of the lens may be described as being convex, theentire object-side surface of the lens may not be convex, and aperipheral region of the object-side surface of the lens may be concave.Also, even though the image-side surface of the lens may be described asbeing concave, the entire image-side surface of the lens may not beconcave, and a peripheral region of the image-side surface of the lensmay be convex.

FIGS. 55 and 56 are cross-sectional views illustrating examples of anoptical imaging system and a lens barrel coupled to each other.

Referring to FIGS. 55 and 56 , an optical imaging system 100 includes aplurality of lenses disposed along an optical axis. In addition, theoptical imaging system 100 further includes a lens barrel 200accommodating the plurality of lenses therein. The plurality of lensesare spaced apart from each other by predetermined distances along theoptical axis.

Each lens of the optical imaging system 100 includes an optical portionand a rib. The optical portion of the lens is a portion of the lens thatis configured to refract light, and is generally formed in a centralportion of the lens. The rib of the lens is an edge portion of the lensthat enables the lens to be mounted in the lens barrel 200 and theoptical axis of the lens to be aligned with the optical axis of theoptical imaging system 100. The rib of the lens extends radially outwardfrom the optical portion, and may be formed integrally with the opticalportion. The optical portions of the lenses are generally not in contactwith each other. For example, the first to seventh lenses are mounted inthe lens barrel 200 so that they are spaced apart from one another bypredetermined distances along the optical axis of the optical imagingsystem 100. The ribs of the lenses may be in selective contact with eachother. For example, the ribs of the first to fourth lenses, or the firstto fifth lenses, or the second to fourth lenses, may be in contact witheach other so that the optical axes of these lenses may be easilyaligned with the optical axis of the optical imaging system 100.

The examples of the optical imaging system 100 described in thisapplication may include a self-alignment structure as illustrated inFIGS. 55 and 56 .

In one example illustrated in FIG. 55 , the optical imaging system 100includes a self-alignment structure in which optical axes of fourconsecutive lenses 1000, 2000, 3000, and 4000 are aligned with anoptical axis of the optical imaging system 100 by coupling the fourlenses 1000, 2000, 3000, and 4000 to one another.

The first lens 1000 disposed closest to an object side of the opticalimaging system 100 is disposed in contact with an inner surface of thelens barrel 200 to align the optical axis of the first lens 1000 withthe optical axis of the optical imaging system 100, the second lens 2000is coupled to the first lens 1000 to align the optical axis of thesecond lens 2000 with the optical axis of the optical imaging system100, the third lens 3000 is coupled to the second lens 2000 to align theoptical axis of the third lens 3000 with the optical axis of the opticalimaging system 100, and the fourth lens 4000 is coupled to the thirdlens 3000 to align the optical axis of the fourth lens 4000 with theoptical axis of the optical imaging system 100. The second lens 2000 tothe fourth lens 4000 may not be disposed in contact with the innersurface of the lens barrel 200.

Although FIG. 55 illustrates that the first lens 1000 to the fourth lens4000 are coupled to one another, the four consecutive lenses that arecoupled to one another may be changed to the second lens 2000 to a fifthlens 5000, the third lens 3000 to a sixth lens 6000, or the fourth lens4000 to a seventh lens 7000.

In another example illustrated in FIG. 56 , the optical imaging system100 includes a self-alignment structure in which optical axes of fiveconsecutive lenses 1000, 2000, 3000, 4000, and 5000 are aligned with anoptical axis of the optical imaging system 100 by coupling the fivelenses 1000, 2000, 3000, 4000, and 5000 to one another.

The first lens 1000 disposed closest to an object side of the opticalimaging system 100 is disposed in contact with an inner surface of thelens barrel 200 to align an optical axis of the first lens 1000 with theoptical axis of the optical imaging system 100, the second lens 2000 iscoupled to the first lens 1000 to align the optical axis of the secondlens 2000 with the optical axis of the optical imaging system 100, thethird lens 3000 is coupled to the second lens 2000 to align the opticalaxis of the third lens 3000 with the optical axis of the optical imagingsystem 100, the fourth lens 4000 is coupled to the third lens 3000 toalign the optical axis of the fourth lens 4000 with the optical axis ofthe optical imaging system 100, and the fifth lens 5000 is coupled tothe fourth lens 4000 to align the optical axis of the fifth lens 5000with the optical axis of the optical imaging system 100. The second lens2000 to the fifth lens 5000 may not be disposed in contact with theinner surface of the lens barrel 200.

Although FIG. 56 illustrates that the first lens 1000 to the fifth lens5000 are coupled to one another, the five consecutive lenses that arecoupled to one another may be changed to the second lens 2000 to a sixthlens 6000, or the third lens 3000 to a seventh lens 7000.

The first lens 1000 is a lens closest to an object (or a subject) to beimaged by the optical imaging system 100, while the seventh lens 7000 isa lens closest to an image sensor (not shown in FIGS. 55 and 56 , butsee the image sensor 190 in FIG. 1 , for example).

In addition, an object-side surface of a lens is a surface of the lensfacing the object, and an image-side surface of a lens is a surface ofthe lens facing the image sensor.

The examples of the optical imaging system 100 disclosed in thisapplication include seven lenses.

For example, referring to FIGS. 55 and 56 , the optical imaging system100 includes a first lens 1000, a second lens 2000, a third lens 3000, afourth lens 4000, a fifth lens 5000, a sixth lens 6000, and a seventhlens 7000 sequentially disposed in numerical order along an optical axisof the optical imaging system 100 from an object side of the opticalimaging system 100 toward an imaging plane of the optical imaging system100.

The optical imaging system 100 further includes an image sensor and afilter. The image sensor forms an imaging plane, and converts lightrefracted by the first to seventh lenses into an electric signal. Thefilter is disposed between the seventh lens and the imaging plane, andblocks infrared rays in the light refracted by the first to seventhlenses from being incident on the imaging plane.

In addition, the optical imaging system 100 further includes a stop toadjust an amount of light incident on the imaging plane. For example,the stop may be disposed in front of the first lens 1000, or between thefirst lens 1000 and the second lens 2000, or between the second lens2000 and the third lens 3000, or at the position of either anobject-side surface or an image-side surface of one of the first lens1000 to the third lens 3000. The stop may be disposed relatively closeto the first lens 1000 to reduce a total length (TTL) of the opticalimaging system 100. Some examples may include two stops, one of whichmay be disposed in front of the first lens 1000, or at the position ofthe object-side surface of the first lens 1000, or between theobject-side surface and the image-side surface of the first lens 1000.

In the examples illustrated in FIGS. 55 and 56 , a spacer is disposedbetween each pair of adjacent lenses. At least a portion of the rib ofeach lens is in contact with one or two of the spacers. The spacersmaintain spacings between the lenses, and block stray light fromreaching the imaging plane.

The spacers include a first spacer SP1, a second spacer SP2, a thirdspacer SP3, a fourth spacer SP4, a fifth spacer SP5, and a sixth spacerSP6 disposed from the object side of the optical imaging system 100toward the image sensor. In some examples, the spacers further include aseventh spacer SP7.

The first spacer SP1 is disposed between the first lens 1000 and thesecond lens 2000, the second spacer SP2 is disposed between the secondlens 2000 and the third lens 3000, the third spacer SP3 is disposedbetween the third lens 3000 and the fourth lens 4000, the fourth spacerSP4 is disposed between the fourth lens 4000 and the fifth lens 5000,the fifth spacer SP5 is disposed between the fifth lens 5000 and thesixth lens 6000, and the sixth spacer SP6 is disposed between the sixthlens 6000 and the seventh lens 7000. When the seventh spacer SP7 isincluded, the seventh spacer SP7 is disposed between the sixth lens 6000and the sixth spacer SP6. A thickness of the seventh spacer SP7 in anoptical axis direction may be greater than a thickness of the sixthspacer SP6 in the optical axis direction.

The first lens has a positive refractive power or a negative refractivepower. In addition, the first lens may have a meniscus shape of which anobject-side surface is convex. In detail, an object-side surface of thefirst lens may be convex, and an image-side surface thereof may beconcave.

At least one of the object-side surface and the image-side surface ofthe first lens may be aspherical. For example, both surfaces of thefirst lens may be aspherical.

The second lens has a positive refractive power or a negative refractivepower. In addition, the second lens may have a meniscus shape of whichan object-side surface is convex. In detail, an object-side surface ofthe second lens may be convex, and an image-side surface thereof may beconcave.

Alternatively, both surfaces of the second lens may be convex. Indetail, the object-side surface and the image-side surface of the secondlens may be convex.

At least one of the object-side surface and the image-side surface ofthe second lens may be aspherical. For example, both surfaces of thesecond lens may be aspherical.

The third lens has a positive refractive power or a negative refractivepower. In addition, the third lens may have a meniscus shape of which anobject-side surface is convex. In detail, an object-side surface of thethird lens may be convex, and an image-side surface thereof may beconcave.

Alternatively, both surfaces of the third lens may be convex. In detail,the object-side surface and the image-side surface of the third lens maybe convex.

Alternatively, the third lens may have a meniscus shape of which animage-side surface is convex. In detail, an object-side surface of thethird lens may be concave, and an image-side surface thereof may beconvex.

At least one of the object-side surface and the image-side surface ofthe third lens may be aspherical. For example, both surfaces of thethird lens may be aspherical.

The fourth lens has a positive refractive power or a negative refractivepower. In addition, the fourth lens may have a meniscus shape of whichan object-side surface is convex. In detail, an object-side surface ofthe fourth lens may be convex, and an image-side surface thereof may beconcave.

Alternatively, both surfaces of the fourth lens may be convex. Indetail, the object-side surface and the image-side surface of the fourthlens may be convex.

Alternatively, the fourth lens may have a meniscus shape of which animage-side surface is convex. In detail, an object-side surface of thefourth lens may be concave, and an image-side surface thereof may beconvex.

At least one of the object-side surface and the image-side surface ofthe fourth lens may be aspherical. For example, both surfaces of thefourth lens may be aspherical.

The fifth lens has a positive refractive power or a negative refractivepower. In addition, the fifth lens may have a meniscus shape of which anobject-side surface is convex. In detail, an object-side surface of thefifth lens may be convex, and an image-side surface thereof may beconcave.

Alternatively, the fifth lens may have a meniscus shape of which animage-side surface is convex. In detail, an object-side surface of thefifth lens may be concave, and an image-side surface thereof may beconvex.

At least one of the object-side surface and the image-side surface ofthe fifth lens may be aspherical. For example, both surfaces of thefifth lens may be aspherical.

The sixth lens has a positive refractive power or a negative refractivepower. In addition, the sixth lens may have a meniscus shape of which anobject-side surface is convex. In detail, an object-side surface of thesixth lens may be convex, and an image-side surface thereof may beconcave.

Alternatively, both surfaces of the sixth lens may be convex. In detail,the object-side surface and the image-side surface of the sixth lens maybe convex.

Alternatively, the sixth lens may have a meniscus shape of which animage-side surface is convex. In detail, an object-side surface of thesixth lens may be concave, and an image-side surface thereof may beconvex.

Alternatively, both surfaces of the sixth lens may be concave. Indetail, the object-side surface and the image-side surface of the sixthlens may be concave.

At least one of the object-side surface and the image-side surface ofthe sixth lens may be aspherical. For example, both surfaces of thesixth lens may be aspherical.

The seventh lens has a positive refractive power or a negativerefractive power. In addition, the seventh lens may have a meniscusshape of which an object-side surface is convex. In detail, anobject-side surface of the seventh lens may be convex, and an image-sidesurface thereof may be concave.

Alternatively, both surfaces of the seventh lens may be concave. Indetail, the object-side surface and the image-side surface of theseventh lens may be concave.

At least one of the object-side surface and the image-side surface ofthe seventh lens may be aspherical. For example, both surfaces of theseventh lens may be aspherical.

In addition, at least one inflection point may be formed on at least oneof the object-side surface and the image-side surface of the seventhlens. An inflection point is a point where a lens surface changes fromconvex to concave, or from concave to convex. A number of inflectionpoints is counted from a center of the lens to an outer edge of theoptical portion of the lens. For example, the object-side surface of theseventh lens may be convex in a paraxial region, and become concavetoward an edge thereof. The image-side surface of the seventh lens maybe concave in a paraxial region, and become convex toward an edgethereof.

FIG. 57 is a cross-sectional view illustrating an example of a shape ofa rib of a seventh lens.

Light reflected from the object (or the subject) may be refracted by thefirst to seventh lenses. In this case, an unintended reflection of thelight may occur. The unintended reflection of the light, which is lightunrelated to formation of an image, may cause a flare phenomenon in acaptured image.

The examples of the optical imaging system 100 described in thisapplication may include a structure for preventing a flare phenomenonand reflection.

For example, as illustrated in FIG. 57 , a rib of the seventh lens 7000disposed closest to the image sensor includes a surface-treated area EA.The surface-treated area EA is a portion of a surface of the rib thathas been surface-treated to be rougher than other portions of thesurface of the rib. For example, the surface-treated area EA may beformed by chemical etching, physical grinding, or any other surfacetreatment method capable of increasing a roughness of a surface. Thesurface-treated area EA scatters reflected light.

Therefore, even though the unintended reflection of the light may occur,the reflected light is prevented from being concentrated at one point,and therefore the occurrence of the flare phenomenon may be suppressed.

The surface-treated area EA may be formed in an entire area from an edgeof the optical portion of the seventh lens 7000 through which lightactually passes to an outer end of the rib. However, as illustrated inFIG. 57 , non-treated areas NEA including step portions E11, E21, andE22 may not be surface-treated, or may be surface-treated to have aroughness less than a roughness of the surface-treated area EA. The stepportions E11, E21, and E22 are portions where the thickness of the ribabruptly changes. A first non-treated area NEA formed on an object-sidesurface of the seventh lens 7000 and including a first step portion E1land a second non-treated area NEA formed on an image-side surface of theseventh lens 7000 and including a second step portion E12 and a thirdstep portion E22 may overlap when viewed in the optical axis direction.

A width G1 of the first non-treated area NEA formed on the object-sidesurface of the seventh lens 7000 may be different from a width G2 of thesecond non-treated area NEA formed on the image-side surface of theseventh lens 7000. In the example illustrated in FIG. 57 , G1 is greaterthan G2.

The width G1 of the first non-treated area NEA includes the first stepportion E11, the second step portion E21, and the third step portion E22when viewed in the optical axis direction, and a width of the secondnon-treated area NEA includes the second step portion E21 and the thirdstep portion E22 but not the first step portion E11 when viewed in theoptical axis direction. A distance G4 from the outer end of the rib tothe second step portion E21 is smaller than a distance G3 from the outerend of the rib to the first step portion E11. Similarly, a distance G5from the outer end of the rib to the third step portion E22 is smallerthan the distance G3 from the outer end of the rib to the first stepportion E11.

The positions at which the non-treated areas NEA and the step portionsE11, E21, and E22 are formed as described above and shown in FIG. 57 maybe advantageous for measuring a concentricity of the seventh lens 7000.

The lenses of the optical imaging system may be made of a light materialhaving a high light transmittance. For example, the first to seventhlenses may be made of a plastic material. However, a material of thefirst to seventh lenses is not limited to the plastic material.

In addition, the first to seventh lenses may have at least oneaspherical surface. That is, at least one of the object-side surface andthe image-side surface of all of the first to seventh lenses may beaspherical. The aspherical surfaces of the first to seventh lenses maybe represented by the following Equation 1:

$\begin{matrix}{Z = {\frac{{cY}^{2}}{1 + \sqrt{1 - {( {1 + K} )c^{2}Y^{2}}}} + {AY}^{4} + {BY}^{6} + {CY}^{8} + {DY}^{10} + {EY^{12}} + {FY}^{14} + {GY^{16}} + {HY}^{18} + \ldots}} & (1)\end{matrix}$

In Equation 1, c is a curvature of a lens surface and is equal to aninverse of a radius of curvature of the lens surface at an optical axisof the lens surface, K is a conic constant, Y is a distance from acertain point on an aspherical surface of the lens to an optical axis ofthe lens in a direction perpendicular to the optical axis, A to H areaspherical constants, Z (or sag) is a distance between the certain pointon the aspherical surface of the lens at the distance Y to the opticalaxis and a tangential plane perpendicular to the optical axis meetingthe apex of the aspherical surface of the lens. Some of the examplesdisclosed in this application include an aspherical constant J. Anadditional term of JY²⁰ may be added to the right side of Equation 1 toreflect the effect of the aspherical constant J.

The optical imaging system may satisfy one or more of the followingConditional Expressions 1 to 5:

0.1<L1w/L7w<0.4  (Conditional Expression 1)

0.5<S6d/f<1.4  (Conditional Expression 2)

0.4<L1TR/L7TR<1.9  (Conditional Expression 3)

0.5<L1234TRavg/L7TR<0.9  (Conditional Expression 4)

0.5<L12345TRavg/L7TR<0.9  (Conditional Expression 5)

In the above Conditional Expressions, L1w is a weight of the first lens,and L7w is a weight of the seventh lens.

S6d is an inner diameter of the sixth spacer, and f is an overall focallength of the optical imaging system.

L1TR is an overall outer diameter of the first lens, and L7TR is anoverall outer diameter of the seventh lens. The overall outer diameterof a lens is an outer diameter of the lens including both the opticalportion of the lens and the rib of the lens.

L1234TRavg is an average value of overall outer diameters of the firstto fourth lenses, and L12345TRavg is an average value of overall outerdiameters of the first to fifth lenses.

Conditional Expression 1 is a conditional expression related to a weightratio between the first lens and the seventh lens, and when ConditionalExpression 1 is satisfied, optical axes may be easily aligned with oneanother through contact between the respective lenses and contactbetween the lenses and the lens barrel.

Conditional Expression 2 is a conditional expression related to a ratiobetween the inner diameter of the sixth spacer disposed between thesixth lens and the seventh lens and the overall focal length of theoptical imaging system, and when Conditional Expression 2 is satisfied,the flare phenomenon due to the unintended reflection of the light maybe suppressed.

Conditional Expression 3 is a conditional expression related to a ratiobetween the overall outer diameter of the first lens and the overallouter diameter of the seventh lens, and when Conditional Expression 3 issatisfied, optical axes may be easily aligned with one another throughcontact between the respective lenses and contact between the lenses andthe lens barrel.

Conditional Expression 4 is a conditional expression related to a ratiobetween the average value of the overall outer diameters of the first tofourth lenses and the overall outer diameter of the seventh lens, andwhen Conditional Expression 4 is satisfied, aberration may be easilycorrected to improve resolution.

Conditional Expression 5 is a conditional expression related to a ratiobetween the average value of the overall outer diameters of the first tofifth lenses and the overall outer diameter of the seventh lens, andwhen Conditional Expression 5 is satisfied, aberration may be easilycorrected to improve resolution.

The optical imaging system may also satisfy one or more of the followingConditional Expressions 6 to 10:

0.1<L1w/L7w<0.3  (Conditional Expression 6)

0.5<S6d/f<1.2  (Conditional Expression 7)

0.4<L1TR/L7TR<0.7  (Conditional Expression 8)

0.5<L1234TRavg/L7TR<0.75  (Conditional Expression 9)

0.5<L12345TRavg/L7TR<0.76  (Conditional Expression 10)

Conditional Expressions 6 to 10 are the same as Conditional Expressions1 to 5, except that Conditional Expressions 6 to 10 specify narrowerranges.

The optical imaging system may also satisfy one or more of the followingConditional Expressions 11 to 32:

0.01<R1/R4<1.3  (Conditional Expression 11)

0.1<R1/R5<0.7  (Conditional Expression 12)

0.05<R1/R6<0.9  (Conditional Expression 13)

0.2<R1/R11<1.2  (Conditional Expression 14)

0.8<R1/R14<1.2  (Conditional Expression 15)

0.6<(R11+R14)/(2*R1)<3.0  (Conditional Expression 16)

0.4<D13/D57<1.2  (Conditional Expression 17)

0.1<(1/f1+1/f2+1/f3+1/f4+1/f5+1/f6+1/f7)*f<0.8  (Conditional Expression18)

0.1<(1/f1+1/f2+1/f3+1/f4+1/f5+1/f6+1/f7)*TTL<1.0   (ConditionalExpression 19)

0.2<TD1/D67<0.8  (Conditional Expression 20)

0.1<(R11+R14)/(R5+R6)<1.0  (Conditional Expression 21)

SD12<SD34  (Conditional Expression 22)

SD56<SD67  (Conditional Expression 23)

SD56<SD34  (Conditional Expression 24)

0.6<TTL/(2*IMG HT)<0.9  (Conditional Expression 25)

0.2<ΣSD/ΣTD<0.7  (Conditional Expression 26)

0<min(f1:f3)/max(f4:f7)<0.4  (Conditional Expression 27)

0.4<ΣTD/TTL<0.7  (Conditional Expression 28)

0.7<SL/TTL<1.0  (Conditional Expression 29)

0.81<f12/f123<0.96  (Conditional Expression 30)

0.6<f12/f1234<0.84  (Conditional Expression 31)

TTL≤6.00  (Conditional Expression 32)

In the above Conditional Expressions, R1 is a radius of curvature of anobject-side surface of the first lens, R4 is a radius of curvature of animage-side surface of the second lens, R5 is a radius of curvature of anobject-side surface of the third lens, R6 is a radius of curvature of animage-side surface of the third lens, R11 is a radius of curvature of anobject-side surface of the sixth lens, and R14 is a radius of curvatureof an image-side surface of the seventh lens.

D13 is a distance along an optical axis of the optical imaging systemfrom the object-side surface of the first lens to the image-side surfaceof the third lens, and D57 is a distance along the optical axis from anobject-side surface of the fifth lens to the image-side surface of theseventh lens.

f1 is a focal length of the first lens, f2 is a focal length of thesecond lens, f3 is a focal length of the third lens, f4 is a focallength of the fourth lens, f5 is a focal length of the fifth lens, f6 isa focal length of the sixth lens, f7 is a focal length of the seventhlens, f is an overall focal length of the optical imaging system, andTTL is a distance along the optical axis from the object-side surface ofthe first lens to an imaging plane of an image sensor of the opticalimaging system.

TD1 is a thickness along the optical axis of the first lens, and D67 isa distance along the optical axis from the object-side surface of thesixth lens to the image-side surface of the seventh lens.

SD12 is a distance along the optical axis from an image-side surface ofthe first lens to an object-side surface of the second lens, SD34 is adistance along the optical axis from the image-side surface of the thirdlens to an object-side surface of the fourth lens, SD56 is a distancealong the optical axis from an image-side surface of the fifth lens tothe object-side surface of the sixth lens, and SD67 is a distance alongthe optical axis from an image-side surface of the sixth lens to anobject-side surface of the seventh lens.

IMG HT is one-half of a diagonal length of the imaging plane of theimage sensor.

ΣSD is a sum of air gaps along the optical axis between the first toseventh lenses, and ΣTD is a sum of thicknesses along the optical axisof the first to seventh lenses. An air gap is a distance along theoptical axis between adjacent ones of the first to seventh lenses.

min(f1:f3) is a minimum value of absolute values of the focal lengths ofthe first to third lenses, and max(f4:f7) is a maximum value of absolutevalues of the focal lengths of the fourth to seventh lenses.

SL is a distance along the optical axis from the stop to the imagingplane of the image sensor.

f12 is a composite focal length of the first and second lenses, f123 isa composite focal length of the first to third lenses, and f1234 is acomposite focal length of the first to fourth lenses.

When Conditional Expression 11 is satisfied, correction effects oflongitudinal spherical aberration and astigmatic field curves may beimproved, and resolution may thus be improved.

When Conditional Expression 12 is satisfied, correction effects oflongitudinal spherical aberration and astigmatic field curves may beimproved, and resolution may thus be improved.

When Conditional Expression 13 is satisfied, correction effects oflongitudinal spherical aberration and astigmatic field curves may beimproved, and resolution may thus be improved.

When Conditional Expression 14 is satisfied, a correction effect oflongitudinal spherical aberration may be improved, and the flarephenomenon may be prevented. Therefore, resolution may be improved.

When Conditional Expression 15 is satisfied, a correction effect oflongitudinal spherical aberration may be improved, and an imaging planecurvature phenomenon may be suppressed. Therefore, resolution may beimproved.

When Conditional Expression 16 is satisfied, a correction effect oflongitudinal spherical aberration may be improved, an imaging planecurvature phenomenon may be suppressed, and the flare phenomenon may beprevented. Therefore, resolution may be improved.

When Conditional Expression 17 is satisfied, a slim optical imagingsystem may be implemented.

When Conditional Expression 18 is satisfied, sensitivity of each lensmay be improved to improve mass productivity.

When Conditional Expression 20 is satisfied, a slim optical imagingsystem may be implemented.

When Conditional Expression 22 is satisfied, a chromatic aberrationcorrection effect may be improved.

When Conditional Expression 25 is satisfied, a slim optical imagingsystem may be implemented.

When Conditional Expression 26 is satisfied, mass productivity of eachlens may be improved, and a slim optical imaging system may beimplemented.

When Conditional Expression 27 is satisfied, a slim optical imagingsystem may be implemented.

When Conditional Expression 28 is satisfied, mass productivity of eachlens may be improved, and a slim optical imaging system may beimplemented.

When Conditional Expression 29 is satisfied, a slim optical imagingsystem may be implemented.

When Conditional Expression 30 is satisfied, a slim optical imagingsystem may be implemented.

When Conditional Expression 31 is satisfied, a slim optical imagingsystem may be implemented.

Next, various examples of the optical imaging system will be described.In the tables that appear in the following examples, S1 denotes anobject-side surface of a first lens, S2 denotes an image-side surface ofthe first lens, S3 denotes an object-side surface of a second lens, S4denotes an image-side surface of the second lens, S5 denotes anobject-side surface of a third lens, S6 denotes an image-side surface ofthe third lens, S7 denotes an object-side surface of a fourth lens, S8denotes an image-side surface of the fourth lens, S9 denotes anobject-side surface of a fifth lens, S10 denotes an image-side surfaceof the fifth lens, S11 denotes an object-side surface of a sixth lens,S12 denotes an image-side surface of the sixth lens, S13 denotes anobject-side surface of a seventh lens, S14 denotes an image-side surfaceof the seventh lens, S15 denotes an object-side surface of a filter, S16denotes an image-side surface of the filter, and S17 denotes an imagingplane.

First Example

FIG. 1 is a view illustrating a first example of an optical imagingsystem, and FIG. 2 illustrates aberration curves of the optical imagingsystem of FIG. 1 .

The first example of the optical imaging system includes a first lens110, a second lens 120, a third lens 130, a fourth lens 140, a fifthlens 150, a sixth lens 160, a seventh lens 170, a filter 180, an imagesensor 190, and a stop (not shown) disposed between the second lens 120and the third lens 130.

The first lens 110 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 120 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 130 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 140 has a positive refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The fifth lens 150 has a negative refractive power, a paraxial region ofan object-side surface thereof is concave, and a paraxial region of animage-side surface thereof is convex.

The sixth lens 160 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 170 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

Two inflection points are formed on the object-side surface of theseventh lens 170. For example, the object-side surface of the seventhlens 170 is convex in the paraxial region, becomes concave in a regionoutside the paraxial region, and becomes convex toward an edge thereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 170. For example, the image-side surface of the seventhlens 170 is concave in the paraxial region, and becomes convex toward anedge thereof.

Although not illustrated in FIG. 1 , the stop is disposed at a distanceof 0.657 mm from the object-side surface of the first lens 110 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 1 listed in Table 55 that appears later in this application.

Table 1 below shows physical properties of the lenses and other elementsof the optical imaging system of FIG. 1 , and Table 2 below showsaspherical surface coefficients of the lenses of FIG. 1 . Both surfacesof all of the lenses of FIG. 1 are aspherical.

TABLE 1 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.30380276 0.4873118 1.546 56.114 0.90 S2 Lens 4.10661787 0.02 0.86 S3Second 3.13219869 0.15 1.669 20.353 0.83 S4 Lens 1.99733595 0.16522590.76 S5 Third 3.1434573 0.2269519 1.546 56.114 0.77 S6 Lens 5.170176220.2383823 0.80 S7 Fourth −18.619397 0.2512803 1.546 56.114 0.85 S8 Lens−13.597043 0.242844 1.00 S9 Fifth −3.8728179 0.23 1.658 21.494 1.06 S10Lens −6.4514212 0.1738361 1.35 S11 Sixth 3.37627601 0.3819845 1.65821.494 1.61 S12 Lens 3.69563051 0.2187456 1.82 S13 Seventh 1.649037620.4758711 1.537 55.711 2.42 S14 Lens 1.23703219 0.1960644 2.56 S15Filter Infinity 0.11 1.519 64.197 2.91 S16 Infinity 0.6315021 2.94 S17Imaging Infinity 3.27 Plane

TABLE 2 K A B C D E F G H S1 −0.04855 −0.0104 0.079678 −0.44646 1.099882−1.60116 1.122811 −0.33899 0 S2 −11.0924 −0.12752 0.167469 0.110923−1.28207 2.595792 −2.35953 0.804002 0 S3 −1.78612 −0.15851 0.372646−0.41814 0.573916 −0.88442 1.331314 −0.80599 0 S4 0.5857 −0.061470.150875 0.049867 −0.07429 −0.56511 2.092798 −1.36903 0 S5 3.760167−0.10504 0.175441 −1.2896 5.059804 −10.8279 12.59218 −5.43044 0 S60.084295 −0.07194 −0.02894 0.170897 −0.94476 3.211016 −4.65595 3.0373540 S7 5.45E−09 −0.14415 −0.13498 0.106142 −0.23108 0.696801 −0.588590.153297 0 S8 −5.2E−09 −0.10523 −0.05764 −0.27895 0.581635 −0.340320.074355 −0.00428 0 S9 −0.32032 −0.09812 0.288941 −1.04554 1.187968−0.44999 −0.09128 0.062806 0 S10 8.754232 −0.15044 0.20833 −0.469690.543726 −0.29268 0.072698 −0.00679 0 S11 −50 0.123875 −0.5262 0.671582−0.54174 0.252604 −0.06038 0.005742 0 S12 −34.5841 0.046016 −0.268540.301454 −0.1998 0.076707 −0.01561 0.001299 0 S13 −0.95155 −0.47220.187431 −0.00725 −0.01893 0.007221 −0.00124 0.000106 −3.7E−06 S14−1.03036 −0.43108 0.275378 −0.13928 0.050665 −0.01212 0.001769 −0.000144.72E−06

Second Example

FIG. 3 is a view illustrating a second example of an optical imagingsystem, and FIG. 4 illustrates aberration curves of the optical imagingsystem of FIG. 3 .

The second example of the optical imaging system includes a first lens210, a second lens 220, a third lens 230, a fourth lens 240, a fifthlens 250, a sixth lens 260, a seventh lens 270, a filter 280, an imagesensor 290, and a stop (not shown) disposed between the first lens 210and the second lens 220.

The first lens 210 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 220 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 230 has a positive refractive power, a paraxial region ofeach of an object-side surface and an image-side surface thereof isconvex.

The fourth lens 240 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 250 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 260 has a positive refractive power, a paraxial region ofeach of an object-side surface and an image-side surface thereof isconvex.

The seventh lens 270 has a negative refractive power, a paraxial regionof each of an object-side surface and an image-side surface thereof isconcave.

One inflection point is formed on the object-side surface of the seventhlens 270. For example, the object-side surface of the seventh lens 270is concave in the paraxial region, and becomes convex toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 270. For example, the image-side surface of the seventhlens 270 is concave in the paraxial region, and becomes convex toward anedge thereof.

Although not illustrated in FIG. 3 , the stop is disposed at a distanceof 0.903 mm from the object-side surface of the first lens 210 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 2 listed in Table 55 that appears later in this application.

Table 3 below shows physical properties of the lenses and other elementsof the optical imaging system of FIG. 3 , and Table 4 below showsaspherical surface coefficients of the lenses of FIG. 3 . Both surfacesof all of the lenses of FIG. 3 are aspherical except for the object-sidesurface of the second lens 220, which is spherical.

TABLE 3 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First2.05360683 0.9034685 1.546 56.114 1.57 S2 Lens 8.69896228 0.1210039 1.51S3 Second 5.79844164 0.23 1.669 20.353 1.41 S4 Lens 3.28223873 0.37199481.25 S5 Third 18.2422536 0.5019823 1.546 56.114 1.28 S6 Lens −30.8317640.1291516 1.40 S7 Fourth 9.45562649 0.26 1.669 20.353 1.42 S8 Lens6.85294408 0.2841745 1.59 S9 Fifth 114.717743 0.3398848 1.669 20.3531.70 S10 Lens 7.75029311 0.2357371 1.96 S11 Sixth 3.82957626 0.80151741.546 56.114 2.27 S12 Lens −2.3157266 0.5095283 2.53 S13 Seventh−2.7230919 0.38 1.546 56.114 3.25 S14 Lens 2.76379359 0.1236113 3.50 S15Filter Infinity 0.11 1.519 64.197 3.79 S16 Infinity 0.697957 3.82 S17Imaging Infinity 4.19 Plane

TABLE 4 K A B C D E F G H J S1 −1.06281 0.01395 0.00941 −0.014120.016751 −0.01213 0.005246 −0.00125 0.000113 0 S2 10.99365 −0.04960.043223 −0.02678 0.01076 −0.00422 0.001531 −0.00036 3.39E−05 0 S3 0 0 00 0 0 0 0 0 0 S4 −1.57846 −0.06964 0.064533 0.011426 −0.07261 0.078892−0.04113 0.010258 −0.00062 0 S5 0 −0.02505 0.012832 −0.06832 0.114397−0.11363 0.062176 −0.01694 0.001754 0 S6 −95 −0.06124 −0.00208 0.018185−0.0574 0.078131 −0.05827 0.022909 −0.0037 0 S7 0 −0.13045 0.042894−0.12127 0.185066 −0.15794 0.079696 −0.02253 0.002763 0 S8 0 −0.102380.076048 −0.14731 0.180393 −0.13452 0.060052 −0.01498 0.001622 0 S9 0−0.12987 0.161036 −0.15532 0.106502 −0.05376 0.017897 −0.00352 0.0003150 S10 3.618339 −0.19523 0.14843 −0.11064 0.069557 −0.03186 0.009112−0.00141 8.97E−05 0 S11 −19.5338 −0.02618 −0.01422 0.001668 0.00202−0.00126 0.0003 −2.8E−05 5.96E−07 0 S12 −0.77737 0.093402 −0.070130.024503 −0.00579 0.001227 −0.0002 1.83E−05 −6.9E−07 0 S13 −17.9057−0.104 0.008741 0.01022 −0.0036 0.000564 −4.8E−05 2.21E−06 −4.2E−08 0S14 −0.59751 −0.10999 0.036578 −0.00899 0.001629 −0.00023 2.28E−05−1.5E−06 6.25E−08 −1.1E−09

Third Example

FIG. 5 is a view illustrating a third example of an optical imagingsystem, and FIG. 6 illustrates aberration curves of the optical imagingsystem of FIG. 5 .

The third example of the optical imaging system includes a first lens310, a second lens 320, a third lens 330, a fourth lens 340, a fifthlens 350, a sixth lens 360, a seventh lens 370, a filter 380, an imagesensor 390, and a stop (not shown) disposed between the first lens 310and the second lens 320.

The first lens 310 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 320 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 330 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 340 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 350 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 360 has a positive refractive power, a paraxial region ofeach of an object-side surface and an image-side surface thereof isconvex.

The seventh lens 370 has a negative refractive power, a paraxial regionof each of an object-side surface and an image-side surface thereof isconcave.

One inflection point is formed on the object-side surface of the seventhlens 370. For example, the object-side surface of the seventh lens 370is concave in the paraxial region, and becomes convex toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 370. For example, the image-side surface of the seventhlens 370 is concave in the paraxial region, and becomes convex toward anedge thereof.

Although not illustrated in FIG. 5 , the stop is disposed at a distanceof 0.818 mm from the object-side surface of the first lens 310 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 3 listed in Table 55 that appears later in this application.

Table 5 below shows physical properties of the lenses and other elementsof the optical imaging system of FIG. 5 , and Table 6 below showsaspherical surface coefficients of the lenses of FIG. 5 . Both surfacesof all of the lenses of FIG. 5 are aspherical except for the object-sidesurface of the second lens 320, which is spherical.

TABLE 5 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.77268075 0.8181175 1.546 56.114 1.38 S2 Lens 7.43505234 0.0795954 1.33S3 Second 5.04692927 0.2 1.669 20.353 1.25 S4 Lens 2.94768599 0.37578361.10 S5 Third 12.3815508 0.4065563 1.546 56.114 1.13 S6 Lens 25.21187280.1314045 1.23 S7 Fourth 5.68409727 0.219 1.669 20.353 1.25 S8 Lens4.4061916 0.151293 1.41 S9 Fifth 27.7177102 0.3053613 1.644 23.516 1.47S10 Lens 8.05648759 0.219293 1.71 S11 Sixth 4.76866792 0.6346891 1.54656.114 1.93 S12 Lens −1.5557108 0.3548236 2.15 S13 Seventh −2.23622480.373515 1.546 56.114 2.75 S14 Lens 2.35098563 0.1948647 2.96 S15 FilterInfinity 0.21 1.519 64.197 3.31 S16 Infinity 0.6157031 3.37 S17 ImagingInfinity 3.70 Plane

TABLE 6 K A B C D E F G H J S1 −1.0302 0.018188 0.032245 −0.071960.112928 −0.10738 0.060719 −0.01872 0.002295 0 S2 9.43023 −0.101020.141494 −0.11688 0.038896 0.013478 −0.02044 0.008552 −0.00134 0 S3 0 00 0 0 0 0 0 0 0 S4 −0.50537 −0.10697 0.153004 0.009755 −0.29683 0.477095−0.35748 0.129532 −0.01458 0 S5 0 −0.05254 0.023493 −0.1143 0.214047−0.26482 0.177126 −0.05517 0.005476 0 S6 −99 −0.11144 0.07916 −0.202120.267335 −0.18518 0.019544 0.044285 −0.01687 0 S7 0 −0.20077 0.140611−0.37803 0.453081 −0.18096 −0.09799 0.111673 −0.02809 0 S8 0 −0.205770.304963 −0.59986 0.731946 −0.53515 0.225984 −0.05251 0.005575 0 S9 0−0.28358 0.467356 −0.47172 0.280955 −0.07421 −0.01626 0.014562 −0.002420 S10 2.862598 −0.31693 0.301196 −0.21698 0.125203 −0.05589 0.017401−0.00325 0.000272 0 S11 −19.5338 −0.07211 −0.00681 0.001046 0.009791−0.00904 0.002973 −0.00036 8.29E−06 0 S12 −1.13682 0.173265 −0.169960.078719 −0.01703 0.000973 0.000343 −7.9E−05  5.3E−06 0 S13 −13.4335−0.08518 −0.04504 0.056746 −0.02132 0.004215 −0.00048 2.92E−05 −7.6E−070 S14 −0.68587 −0.15974 0.072817 −0.02745 0.00783 −0.00164 0.000238−2.3E−05 1.25E−06 −3E−08

Fourth Example

FIG. 7 is a view illustrating a fourth example of an optical imagingsystem, and FIG. 8 illustrates aberration curves of the optical imagingsystem of FIG. 7 .

The fourth example of the optical imaging system includes a first lens410, a second lens 420, a third lens 430, a fourth lens 440, a fifthlens 450, a sixth lens 460, a seventh lens 470, a filter 480, an imagesensor 490, and a stop (not shown) disposed between the second lens 420and the third lens 430.

The first lens 410 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 420 has a positive refractive power, a paraxial regionof each of an object-side surface and an image-side surface thereof isconvex.

The third lens 430 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 440 has a positive refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The fifth lens 450 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 460 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 470 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

Two inflection points are formed on the object-side surface of theseventh lens 470. For example, the object-side surface of the seventhlens 470 is convex in the paraxial region, becomes concave in a regionoutside the paraxial region, and becomes convex toward an edge thereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 470. For example, the image-side surface of the seventhlens 470 is concave in the paraxial region, and becomes convex toward anedge thereof.

Although not illustrated in FIG. 7 , the stop is disposed at a distanceof 1.160 mm from the object-side surface of the first lens 410 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 4 listed in Table 55 that appears later in this application.

Table 7 below shows physical properties of the lenses and other elementsof the optical imaging system of FIG. 7 , and Table 8 below showsaspherical surface coefficients of the lenses of FIG. 7 . Both surfacesof all of the lenses of FIG. 7 are aspherical.

TABLE 7 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.944433 0.44936 1.546 56.114 1.272 S2 Lens 2.977539 0.114456 1.251 S3Second 2.684097 0.57757 1.546 56.114 1.214 S4 Lens −14.8551 0.0185391.179 S5 Third 4.307671 0.185386 1.679 19.236 1.072 S6 Lens 2.1389720.559077 1.015 S7 Fourth −1112.32 0.276572 1.679 19.236 1.177 S8 Lens−1112.32 0.195337 1.351 S9 Fifth 3.11964 0.284764 1.546 56.114 1.590 S10Lens 3.052659 0.21926 1.857 S11 Sixth 3.020575 0.350029 1.679 19.2361.993 S12 Lens 2.4858 0.130575 2.317 S13 Seventh 1.44499 0.501569 1.53753.955 2.663 S14 Lens 1.27E+00 0.243037 2.827 S15 Filter Infinity 0.11 1.5187  64.1664 3.105532 S16 Infinity 0.596879 3.136694 S17 ImagingInfinity 3.408113 Plane

TABLE 8 K A B C D E F G H J S1 −7.583 0.0888 −0.119 0.0923 −0.09480.0482 −0.003 −0.0042 0.0008 0 S2 −20.327 −0.0066 −0.1632 0.1025 0.0438−0.0722 0.0262 −0.0005 −0.0011 0 S3 −0.2671 −0.0459 −0.0455 −0.0270.1584 −0.0377 −0.1072 0.0826 −0.0186 0 S4 0 0.0277 −0.1403 0.12280.1799 −0.4927 0.4448 −0.186 0.03 0 S5 −4.5253 −0.0875 0.0631 −0.24830.8524 −1.3993 1.2015 −0.5193 0.0898 0 S6 0.5431 −0.123 0.1655 −0.29540.5449 −0.6999 0.5654 −0.2554 0.0541 0 S7 0 −0.0243 −0.1085 0.1778−0.2176 0.2407 −0.2382 0.1432 −0.0356 0 S8 0 −0.0162 −0.1425 0.07880.0935 −0.1616 0.0885 −0.0169 0 0 S9 −43.017 0.1677 −0.2344 0.1196−0.0548 0.0387 −0.0269 0.0094 −0.0012 0 S10 −5.2037 −0.0358 0.0999−0.2203 0.2016 −0.1066 0.0335 −0.0057 0.0004 0 S11 −1.699 0.0343 −0.27370.3209 −0.2494 0.1179 −0.0316 0.0045 −0.0003 0 S12 −0.0013 −0.0989−0.0458 0.0603 −0.0408 0.0165 −0.0038 0.0005 −2E−05  0 S13 −0.8015−0.5195 0.2893 −0.1079 0.0311 −0.0069 0.0011 −0.0001 7E−06 −2E−07 S14−1.2781 −0.3766 0.2432 −0.1184 0.0416 −0.01 0.0016 −0.0002 9E−06 −2E−07

Fifth Example

FIG. 9 is a view illustrating a fifth example of an optical imagingsystem, and FIG. 10 illustrates aberration curves of the optical imagingsystem of FIG. 9 .

The fifth example of the optical imaging system includes a first lens510, a second lens 520, a third lens 530, a fourth lens 540, a fifthlens 550, a sixth lens 560, a seventh lens 570, a filter 580, an imagesensor 590, and a stop (not shown) disposed between the second lens 520and the third lens 530.

The first lens 510 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 520 has a positive refractive power, a paraxial regionof each of an object-side surface of an image-side surface thereof isconvex.

The third lens 530 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 540 has a negative refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The fifth lens 550 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 560 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 570 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

Two inflection points are formed on the object-side surface of theseventh lens 570. For example, the object-side surface of the seventhlens 570 is convex in the paraxial region, becomes concave in a regionoutside the paraxial region, and becomes convex toward an edge thereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 570. For example, the image-side surface of the seventhlens 570 is concave in the paraxial region, and becomes convex toward anedge thereof.

Although not illustrated in FIG. 9 , the stop is disposed at a distanceof 1.169 mm from the object-side surface of the first lens 510 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 5 listed in Table 55 that appears later in this application.

Table 9 below shows physical properties of the lenses and other elementsof the optical imaging system of FIG. 9 , and Table 10 below showsaspherical surface coefficients of the lenses of FIG. 9 . Both surfacesof all of the lenses of FIG. 9 are aspherical.

TABLE 9 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.951165 0.448752 1.546 56.114 1.307 S2 Lens 3.115162 0.125992 1.253 S3Second 2.868611 0.575289 1.546 56.114 1.214 S4 Lens −12.9825 0.0185631.180 S5 Third 4.506414 0.185629 1.679 19.236 1.074 S6 Lens 2.1968550.519693 1.016 S7 Fourth −2108.87 0.279556 1.679 19.236 1.179 S8 Lens−6755.44 0.171507 1.338 S9 Fifth 3.113522 0.273438 1.546 56.114 1.528S10 Lens 3.267187 0.241671 1.808 S11 Sixth 3.22281 0.364954 1.679 19.2361.996 S12 Lens 2.538835 0.143764 2.320 S13 Seventh 1.445077 0.512191.537 53.955 2.500 S14 Lens 1.27E+00 0.250094 2.738 S15 Filter Infinity0.11 1.5187  64.1664 2.939872 S16 Infinity 0.597851 2.970893 S17 ImagingInfinity 3.250775 Plane

TABLE 10 K A B C D E F G H J S1 −7.5279 0.0857 −0.105 0.0528 −0.0256−0.0221 0.0379 −0.0166 0.0023 0 S2 −19.893 −0.0142 −0.1337 0.0682 0.0621−0.0783 0.0306 −0.0031 −0.0006 0 S3 −0.0142 −0.0449 −0.0418 −0.01470.1136 0.012 −0.1333 0.0892 −0.0193 0 S4 0 0.0281 −0.189 0.276 −0.0808−0.2297 0.2908 −0.1382 0.024 0 S5 −6.2325 −0.0763 −0.0054 −0.0795 0.6054−1.1875 1.107 −0.5047 0.0912 0 S6 0.4782 −0.115 0.1396 −0.2676 0.5637−0.7991 0.6898 −0.325 0.0682 0 S7 0 −0.0188 −0.0772 0.0717 0.0184 −0.0810.0225 0.0277 −0.0139 0 S8 0 −0.0127 −0.1356 0.0837 0.0781 −0.15020.0847 −0.0163 0 0 S9 −49.08 0.1815 −0.3205 0.2837 −0.2161 0.1317−0.0595 0.0158 −0.0017 0 S10 −5.4303 −0.0205 0.025 −0.1003 0.1046−0.0624 0.0222 −0.0043 0.0003 0 S11 −1.136 0.0314 −0.2615 0.3261 −0.26950.133 −0.0369 0.0053 −0.0003 0 S12 0.0272 −0.1293 0.0241 5E−05 −0.01230.0085 −0.0024 0.0003 −2E−05  0 S13 −0.8 −0.5247 0.2994 −0.1227 0.0414−0.0108 0.002 −0.0002 2E−05 −4E−07 S14 −1.3207 −0.3666 0.2425 −0.12480.0468 −0.0121 0.002 −0.0002 1E−05 −3E−07

Sixth Example

FIG. 11 is a view illustrating a sixth example of an optical imagingsystem, and FIG. 12 illustrates aberration curves of the optical imagingsystem of FIG. 11 .

The sixth example of the optical imaging system includes a first lens610, a second lens 620, a third lens 630, a fourth lens 640, a fifthlens 650, a sixth lens 660, a seventh lens 670, a filter 680, an imagesensor 690, and a stop (not shown) disposed between the first lens 610and the second lens 620.

The first lens 610 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 620 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 630 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 640 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 650 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 660 has a positive refractive power, a paraxial region ofeach of an object-side surface and an image-side surface thereof isconvex.

The seventh lens 670 has a negative refractive power, a paraxial regionof each of an object-side surface and an image-side surface thereof isconcave.

One inflection point is formed on the object-side surface of the seventhlens 670. For example, the object-side surface of the seventh lens 670is concave in the paraxial region, and becomes convex toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 670. For example, the image-side surface of the seventhlens 670 is concave in the paraxial region, and becomes convex toward anedge thereof.

Although not illustrated in FIG. 11 , the stop is disposed at a distanceof 0.383 mm from the object-side surface of the first lens 610 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 6 listed in Table 55 that appears later in this application.

Table 11 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 11 , and Table 12 belowshows aspherical surface coefficients of the lenses of FIG. 11 . Bothsurfaces of all of the lenses of FIG. 11 are aspherical.

TABLE 11 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First2.182354 0.332873 1.546 56.114 1.380 S2 Lens 1.943873 0.05 1.369 S3Second 1.685732 0.732159 1.546 56.114 1.335 S4 Lens 28.37273 0.05 1.264S5 Third 7.153573 0.22 1.679 19.236 1.185 S6 Lens 2.922347 0.4264061.050 S7 Fourth 46.9146 0.312126 1.646 23.528 1.112 S8 Lens 17.586010.26165 1.268 S9 Fifth 2.265526 0.27 1.646 23.528 1.774 S10 Lens2.314346 0.373051 1.839 S11 Sixth 8.518581 0.607812 1.546 56.114 2.160S12 Lens −1.98711 0.378187 2.308 S13 Seventh −4.7165 0.36 1.546 56.1142.780 S14 Lens 1.89E+00 0.145735 2.998 S15 Filter Infinity 0.11 1.518764.1664 3.352752 S16 Infinity 0.67 3.384589 S17 Imaging Infinity3.712027 Plane

TABLE 12 K A B C D E F G H S1 −3.5715 0.0005 0.0011 −0.0181 0.00250.0107 −0.0084 0.0026 −0.0003 S2 −9.1496 −0.0513 −0.0055 0.0116 0.0161−0.0207 0.0078 −0.001 0 S3 −2.5622 −0.0879 0.1115 −0.1204 0.1625 −0.13250.0578 −0.0118 0.0006 S4 −90 −0.078 0.2103 −0.4384 0.6397 −0.6153 0.3736−0.1288 0.0189 S5 0 −0.1133 0.2975 −0.5447 0.7496 −0.7199 0.4525 −0.16420.0257 S6 4.6946 −0.0705 0.1434 −0.2144 0.1998 −0.0956 −0.0142 0.0399−0.0137 S7 0 −0.0972 0.1221 −0.3303 0.5457 −0.6222 0.4555 −0.1995 0.0405S8 0 −0.1596 0.2027 −0.3281 0.3412 −0.2472 0.1212 −0.0385 0.0064 S9−18.27 −0.0564 −0.0069 0.0518 −0.0566 0.0228 −0.0011 −0.0019 0.0004 S10−15.127 −0.0603 −0.0145 0.0594 −0.0601 0.0318 −0.0096 0.0015 −1E−04 S110 0.0027 −0.0398 0.025 −0.0137 0.005 −0.001 1E−04 −4E−06 S12 −1.16930.1224 −0.1006 0.0535 −0.0195 0.005 −0.0008 8E−05 −3E−06 S13 −4.4446−0.097 −0.0137 0.0358 −0.0141 0.0028 −0.0003 2E−05 −5E−07 S14 −8.7431−0.0906 0.0342 −0.009 0.0017 −0.0002 2E−05 −1E−06   3E−08

Seventh Example

FIG. 13 is a view illustrating a seventh example of an optical imagingsystem, and FIG. 14 illustrates aberration curves of the optical imagingsystem of FIG. 13 .

The seventh example of the optical imaging system includes a first lens710, a second lens 720, a third lens 730, a fourth lens 740, a fifthlens 750, a sixth lens 760, a seventh lens 770, a filter 780, an imagesensor 790, and a stop (not shown) disposed between the first lens 710and the second lens 720.

The first lens 710 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 720 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 730 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 740 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 750 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 760 has a positive refractive power, a paraxial region ofeach of an object-side surface and an image-side surface thereof isconvex.

The seventh lens 770 has a negative refractive power, a paraxial regionof each of an object-side surface and an image-side surface thereof isconcave.

One inflection point is formed on the object-side surface of the seventhlens 770. For example, the object-side surface of the seventh lens 770is concave in the paraxial region, and becomes convex toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 770. For example, the image-side surface of the seventhlens 770 is concave in the paraxial region, and becomes convex toward anedge thereof.

Although not illustrated in FIG. 13 , the stop is disposed at a distanceof 0.351 mm from the object-side surface of the first lens 710 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 7 listed in Table 55 that appears later in this application.

Table 13 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 13 , and Table 14 belowshows aspherical surface coefficients of the lenses of FIG. 13 . Bothsurfaces of all of the lenses of FIG. 13 are aspherical.

TABLE 13 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First2.103288 0.300965 1.546 56.114 1.380 S2 Lens 1.828785 0.05 1.362 S3Second 1.604129 0.748312 1.546 56.114 1.320 S4 Lens 21.76312 0.05 1.249S5 Third 6.824657 0.22 1.679 19.236 1.185 S6 Lens 2.852069 0.4185411.050 S7 Fourth 36.70533 0.30841 1.646 23.528 1.104 S8 Lens 23.64390.296196 1.268 S9 Fifth 2.423731 0.25 1.646 23.528 1.614 S10 Lens2.468626 0.362929 1.874 S11 Sixth 8.604153 0.597419 1.546 56.114 2.160S12 Lens −1.90679 0.321858 2.300 S13 Seventh −3.92912 0.36 1.546 56.1142.780 S14 Lens 1.89E+00 0.135369 2.984 S15 Filter Infinity 0.11  1.5187 64.1664 3.365202 S16 Infinity 0.67 3.39617 S17 Imaging Infinity3.709387 Plane

TABLE 14 K A B C D E F G H S1 −3.5773 −0.0004 0.0047 −0.0224 0.00320.0133 −0.0108 0.0034 −0.0004 S2 −9.0551 −0.045 −0.0042 0.0097 0.0134−0.0167 0.0059 −0.0008 0 S3 −2.3378 −0.0993 0.1427 −0.1434 0.1477−0.0828 0.0112 0.0087 −0.003 S4 99.97 −0.0923 0.262 −0.5433 0.7929−0.7771 0.4878 −0.1745 0.0264 S5 0 −0.1328 0.3622 −0.6631 0.8954 −0.850.5347 −0.1961 0.0311 S6 4.6392 −0.08 0.1668 −0.2414 0.2072 −0.0831−0.0267 0.0433 −0.014 S7 0 −0.1064 0.1429 −0.4185 0.7951 −1.0313 0.8413−0.3948 0.0819 S8 0 −0.1464 0.1697 −0.3068 0.3901 −0.3663 0.2325 −0.08890.0157 S9 −16.976 −0.0598 0.0066 0.0185 −0.0133 −0.0079 0.0105 −0.00410.0006 S10 −16.514 −0.0486 −0.0329 0.0697 −0.0576 0.0259 −0.0069 0.001−7E−05 S11 0 0.0021 −0.0386 0.0152 −0.0049 0.0011 −3E−05 −2E−05  2E−06S12 −1.0939 0.1344 −0.1168 0.0671 −0.0277 0.0082 −0.0016 0.0002 −7E−06S13 −6.2725 −0.1233 0.0218 0.0166 −0.0084 0.0018 −0.0002 1E−05 −3E−07S14 −9.9341 −0.1059 0.0534 −0.0191 0.0046 −0.0008 8E−05 −4E−06  1E−07

Eighth Example

FIG. 15 is a view illustrating an eighth example of an optical imagingsystem, and FIG. 16 illustrates aberration curves of the optical imagingsystem of FIG. 15 .

The eighth example of the optical imaging system includes a first lens810, a second lens 820, a third lens 830, a fourth lens 840, a fifthlens 850, a sixth lens 860, a seventh lens 870, a filter 880, an imagesensor 890, and a stop (not shown) disposed between the first lens 810and the second lens 820.

The first lens 810 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 820 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 830 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 840 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 850 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 860 has a positive refractive power, a paraxial region ofeach of an object-side surface and an image-side surface thereof isconvex.

The seventh lens 870 has a negative refractive power, a paraxial regionof each of an object-side surface and an image-side surface thereof isconcave.

One inflection point is formed on the object-side surface of the seventhlens 870. For example, the object-side surface of the seventh lens 870is concave in the paraxial region, and becomes convex toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 870. For example, the image-side surface of the seventhlens 870 is concave in the paraxial region, and becomes convex toward anedge thereof.

Although not illustrated in FIG. 15 , the stop is disposed at a distanceof 0.336 mm from the object-side surface of the first lens 810 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 8 listed in Table 55 that appears later in this application.

Table 15 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 15 , and Table 16 belowshows aspherical surface coefficients of the lenses of FIG. 15 . Bothsurfaces of all of the lenses of FIG. 15 are aspherical.

TABLE 15 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First2.002076 0.290476 1.546 56.114 1.275 S2 Lens 1.735025 0.046207 1.265 S3Second 1.510849 0.69189 1.546 56.114 1.234 S4 Lens 25.17448 0.0507821.156 S5 Third 6.622812 0.20331 1.679 19.236 1.088 S6 Lens 2.6908820.397038 0.970 S7 Fourth 404.2399 0.304853 1.646 23.528 1.031 S8 Lens26.39909 0.238795 1.192 S9 Fifth 2.030671 0.231034 1.646 23.528 1.495S10 Lens 2.049104 0.337714 1.721 S11 Sixth 9.000096 0.577572 1.54656.114 1.996 S12 Lens −1.67925 0.339723 2.084 S13 Seventh −3.836640.33269 1.546 56.114 2.569 S14 Lens 1.71E+00 0.146102 2.784 S15 FilterInfinity 0.11 1.5187 64.1664 3.104605 S16 Infinity 0.603297 3.133872 S17Imaging Infinity 3.409206 Plane

TABLE 16 K A B C D E F G H S1 −3.5658 −0.0001 0.0048 −0.0338 0.00580.0258 −0.024 0.0087 −0.0012 S2 −8.9286 −0.0617 −0.0072 0.019 0.0308−0.0458 0.0196 −0.0029 0 S3 −2.4366 −0.118 0.178 −0.2127 0.3039 −0.26130.1138 −0.0182 −0.0012 S4 100 −0.0932 0.2737 −0.6752 1.2227 −1.4655 1.1−0.4621 0.0813 S5 0 −0.1401 0.3995 −0.8103 1.2941 −1.4787 1.1095 −0.47750.0877 S6 4.6754 −0.0913 0.2084 −0.3503 0.3957 −0.2854 0.067 0.0558−0.0336 S7 0 −0.1191 0.1586 −0.5241 1.0591 −1.4826 1.3333 −0.7155 0.1765S8 0 −0.2012 0.3026 −0.6033 0.8015 −0.7547 0.4799 −0.1903 0.0367 S9−18.968 −0.0705 −0.017 0.0854 −0.095 0.0372 0.0031 −0.007 0.0016 S10−15.615 −0.0761 −0.0114 0.0715 −0.083 0.0509 −0.0182 0.0035 −0.0003 S110 −0.0083 −0.0355 0.0253 −0.0245 0.0145 −0.0045 0.0007 −5E−05 S12−1.1609 0.1552 −0.1513 0.1068 −0.0571 0.0215 −0.005 0.0006 −3E−05 S13−4.7786 −0.1272 −0.0055 0.0492 −0.0232 0.0053 −0.0007  4E−05 −1E−06 S14−8.9618 −0.1184 0.0565 −0.0195 0.0048 −0.0009 1E−04 −6E−06  2E−07

Ninth Example

FIG. 17 is a view illustrating a ninth example of an optical imagingsystem, and FIG. 18 illustrates aberration curves of the optical imagingsystem of FIG. 17 .

The ninth example of the optical imaging system includes a first lens910, a second lens 920, a third lens 930, a fourth lens 940, a fifthlens 950, a sixth lens 960, a seventh lens 970, a filter 980, an imagesensor 990, and a stop (not shown) disposed between the first lens 910and the second lens 920.

The first lens 910 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 920 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 930 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 940 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 950 has a negative refractive power, a paraxial region ofan object-side surface thereof is concave, and a paraxial region of animage-side surface thereof is convex.

The sixth lens 960 has a positive refractive power, a paraxial region ofeach of an object-side surface and an image-side surface thereof isconvex.

The seventh lens 970 has a negative refractive power, a paraxial regionof each of an object-side surface and an image-side surface thereof isconcave.

One inflection point is formed on the object-side surface of the seventhlens 970. For example, the object-side surface of the seventh lens 970is concave in the paraxial region, and becomes convex toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 970. For example, the image-side surface of the seventhlens 970 is concave in the paraxial region, and becomes convex toward anedge thereof.

Although not illustrated in FIG. 17 , the stop is disposed at a distanceof 0.731 mm from the object-side surface of the first lens 910 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 9 listed in Table 55 that appears later in this application.

Table 17 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 17 , and Table 18 belowshows aspherical surface coefficients of the lenses of FIG. 17 . Bothsurfaces of all of the lenses of FIG. 17 are aspherical.

TABLE 17 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.732331 0.731243 1.546 56.114 1.250 S2 Lens 12.53699 0.070023 1.181 S3Second 5.589296 0.2 1.667 20.353 1.147 S4 Lens 2.573966 0.39715 1.100 S5Third 8.065523 0.384736 1.546 56.114 1.128 S6 Lens 7.836681 0.1925911.247 S7 Fourth 6.687158 0.244226 1.546 56.114 1.276 S8 Lens 30.328470.271297 1.374 S9 Fifth −3.28742 0.24968 1.667 20.353 1.481 S10 Lens−4.51593 0.138845 1.734 S11 Sixth 5.679879 0.519865 1.546 56.114 2.150S12 Lens −1.89003 0.316634 2.318 S13 Seventh −3.93255 0.3 1.546 56.1142.640 S14 Lens 1.741826 0.193709 2.747 S15 Filter Infinity 0.11 1.51864.166 3.146 S16 Infinity 0.78 3.177045639 S17 Imaging Infinity3.536356437 Plane

TABLE 18 K A B C D E F G H J S1 −0.7464 0.01386 0.03443 −0.0749 0.10292−0.0706 0.01727 0.00423 −0.0023 0 S2 36.6688 −0.0823 0.19496 −0.30670.36336 −0.323 0.19024 −0.0632 0.00855 0 S3 −1.3559 −0.1603 0.33047−0.4059 0.33245 −0.1787 0.06728 −0.0166 0.00178 0 S4 −0.4109 −0.09070.14443 0.1155 −0.7969 1.50089 −1.4406 0.72187 −0.147 0 S5 0 −0.07390.04629 −0.1203 0.11651 −0.0578 −0.0089 0.02328 −0.0057 0 S6 0 −0.09320.00341 0.05212 −0.1827 0.24566 −0.2173 0.11261 −0.0241 0 S7 25.1476−0.1235 −0.1887 0.37626 −0.554 0.67306 −0.5796 0.27819 −0.0538 0 S8 −99−9E−05 −0.3274 0.35885 −0.3195 0.34506 −0.2608 0.09954 −0.0144 0 S9−70.894 0.02055 0.04825 −0.5284 0.75832 −0.4915 0.16359 −0.0271 0.001750 S10 2.28319 0.17594 −0.3448 0.22829 −0.0716 0.01095 −0.0007 −4E−061.4E−06  0 S11 −99 0.11875 −0.2169 0.16747 −0.0871 0.02755 −0.00490.00045 −2E−05 0 S12 −3.3067 0.16436 −0.1849 0.1159 −0.049 0.01383−0.0024 0.00023 −9E−06 0 S13 −2.4772 −0.1026 −0.0482 0.07401 −0.03080.00666 −0.0008  5.5E−05 −2E−06 0 S14 −1.1028 −0.2935 0.20325 −0.11270.04574 −0.0129 0.0024 −0.0003 1.8E−05  −5E−07

Tenth Example

FIG. 19 is a view illustrating a tenth example of an optical imagingsystem, and FIG. 20 illustrates aberration curves of the optical imagingsystem of FIG. 19 .

The tenth example of the optical imaging system includes a first lens1010, a second lens 1020, a third lens 1030, a fourth lens 1040, a fifthlens 1050, a sixth lens 1060, a seventh lens 1070, a filter 1080, animage sensor 1090, and a stop (not shown) disposed between the firstlens 1010 and the second lens 1020.

The first lens 1010 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 1020 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 1030 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 1040 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 1050 has a negative refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The sixth lens 1060 has a positive refractive power, a paraxial regionof each of an object-side surface and an image-side surface thereof isconvex.

The seventh lens 1070 has a negative refractive power, a paraxial regionof each of an object-side surface and an image-side surface thereof isconcave.

One inflection point is formed on the object-side surface of the seventhlens 1070. For example, the object-side surface of the seventh lens 1070is concave in the paraxial region, and becomes convex toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 1070. For example, the image-side surface of theseventh lens 1070 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 19 , the stop is disposed at a distanceof 0.690 mm from the object-side surface of the first lens 1010 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 10 listed in Table 55 that appears later in this application.

Table 19 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 19 , and Table 20 belowshows aspherical surface coefficients of the lenses of FIG. 19 . Bothsurfaces of all of the lenses of FIG. 19 are aspherical.

TABLE 19 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.782088 0.689797 1.546 56.114 1.275 S2 Lens 13.89149 0.079047 1.226 S3Second 6.087772 0.2 1.667 20.353 1.192 S4 Lens 2.729115 0.404069 1.100S5 Third 8.069534 0.351255 1.546 56.114 1.157 S6 Lens 7.933764 0.1733981.256 S7 Fourth 6.770708 0.253752 1.546 56.114 1.280 S8 Lens 59.267550.221445 1.370 S9 Fifth −3.04667 0.446166 1.667 20.353 1.423 S10 Lens−4.61706 0.092345 1.742 S11 Sixth 5.54179 0.885686 1.546 56.114 2.150S12 Lens −1.81648 0.263902 2.247 S13 Seventh −3.72821 0.334926 1.54656.114 2.609 S14 Lens 1.795292 0.214212 2.895 S15 Filter Infinity 0.111.518 64.166 3.128 S16 Infinity 0.78 3.159505988 S17 Imaging Infinity3.5352 Plane

TABLE 20 K A B C D E F G H J S1 −0.7799 0.01197 0.05018 −0.1139 0.15402−0.1058 0.0277 0.00415 −0.0027 0 S2 47.9347 −0.0683 0.17293 −0.30830.40045 −0.3589 0.19954 −0.0605 0.0074 0 S3 1.68169 −0.1465 0.29389−0.3639 0.28524 −0.0978 −0.0255 0.03457 −0.0087 0 S4 −0.5294 −0.09310.17548 −0.0689 −0.2817 0.70925 −0.7504 0.40105 −0.0855 0 S5 0 −0.06920.02762 −0.0586 0.02149 0.04226 −0.0786 0.05249 −0.0116 0 S6 0 −0.09230.00494 0.02984 −0.1124 0.16118 −0.1632 0.09263 −0.0206 0 S7 25.6946−0.1416 −0.0429 −0.049 0.12511 0.02541 −0.2058 0.15568 −0.0361 0 S8 −990.00488 −0.296 0.32057 −0.3817 0.48577 −0.3607 0.13074 −0.0181 0 S9−70.539 −0.0878 0.24262 −0.6812 0.81506 −0.4953 0.1593 −0.0257 0.00163 0S10 1.48962 0.12295 −0.2057 0.12659 −0.0423 0.00892 −0.0013 0.00012−5E−06 0 S11 −99 0.113 −0.1689 0.11533 −0.0542 0.01559 −0.0025 0.00021−7E−06 0 S12 −2.8554 0.10708 −0.1088 0.05801 −0.0206 0.0049 −0.00075.7E−05 −2E−06 0 S13 −2.6312 −0.0807 −0.0543 0.06724 −0.0264 0.0055−0.0007 4.3E−05 −1E−06 0 S14 −1.0845 −0.2364 0.13321 −0.0576 0.0184−0.0041 0.00062 −6E−05  3.2E−06  −7E−08

Eleventh Example

FIG. 21 is a view illustrating an eleventh example of an optical imagingsystem, and FIG. 22 illustrates aberration curves of the optical imagingsystem of FIG. 21 .

The eleventh example of the optical imaging system includes a first lens1110, a second lens 1120, a third lens 1130, a fourth lens 1140, a fifthlens 1150, a sixth lens 1160, a seventh lens 1170, a filter 1180, animage sensor 1190, and a stop (not shown) disposed between the firstlens 1110 and the second lens 1120.

The first lens 1110 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 1120 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 1130 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 1140 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 1150 has a negative refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The sixth lens 1160 has a positive refractive power, a paraxial regionof each of an object-side surface and an image-side surface thereof isconvex.

The seventh lens 1170 has a negative refractive power, a paraxial regionof each of an object-side surface and an image-side surface thereof isconcave.

One inflection point is formed on the object-side surface of the seventhlens 1170. For example, the object-side surface of the seventh lens 1170is concave in the paraxial region, and becomes convex toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 1170. For example, the image-side surface of theseventh lens 1170 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 21 , the stop is disposed at a distanceof 0.726 mm from the object-side surface of the first lens 1110 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 11 listed in Table 55 that appears later in this application.

Table 21 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 21 , and Table 22 belowshows aspherical surface coefficients of the lenses of FIG. 21 . Bothsurfaces of all of the lenses of FIG. 21 are aspherical.

TABLE 21 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.792301 0.726309 1.546 56.114 1.330 S2 Lens 13.20491 0.090736 1.287 S3Second 5.976271 0.2 1.667 20.353 1.219 S4 Lens 2.717433 0.392614 1.100S5 Third 7.924964 0.368939 1.546 56.114 1.160 S6 Lens 7.783378 0.1354151.266 S7 Fourth 6.732611 0.266976 1.546 56.114 1.283 S8 Lens 34.215370.221138 1.379 S9 Fifth −2.99938 0.446167 1.667 20.353 1.429 S10 Lens−4.33966 0.050671 1.767 S11 Sixth 5.602517 0.919146 1.546 56.114 2.150S12 Lens −1.61634 0.250496 2.124 S13 Seventh −3.32028 0.3 1.546 56.1142.555 S14 Lens 1.721575 0.241394 2.854 S15 Filter Infinity 0.11 1.51864.166 3.042 S16 Infinity 0.78 3.076461274 S17 Imaging Infinity3.539791201 Plane

TABLE 22 K A B C D E F G H J S1 −0.8043 0.01289 0.03726 −0.0816 0.11409−0.089 0.03652 −0.0062 −0.0001 0 S2 51.3479 −0.0483 0.05093 0.0719−0.2927 0.39068 −0.2714 0.0975 −0.0144 0 S3 3.11156 −0.1249 0.178−0.0145 −0.3397 0.56985 −0.443 0.17445 −0.0279 0 S4 −0.6552 −0.07930.09873 0.18501 −0.7911 1.31375 −1.1601 0.5393 −0.1015 0 S5 0 −0.0660.06134 −0.18 0.24321 −0.2015 0.08626 −0.0114 −0.0009 0 S6 0 −0.0855−0.0306 0.18152 −0.4356 0.54102 −0.4166 0.18221 −0.0336 0 S7 25.5599−0.1157 −0.2609 0.66152 −1.0774 1.19203 −0.8541 0.34504 −0.0583 0 S8 −990.0276 −0.4662 0.78122 −1.0595 1.08297 −0.6699 0.21615 −0.0277 0 S9−74.927 −0.0825 0.26638 −0.7895 0.98252 −0.6232 0.21113 −0.0363  0.00250 S10 1.48962 0.15316 −0.249 0.16958 −0.0655 0.01574 −0.0024 0.00021−8E−06 0 S11 −99 0.09288 −0.1748 0.13327 −0.0666 0.02003 −0.0034 0.00029−1E−05 0 S12 −2.4857 0.11037 −0.1344 0.07896 −0.0304 0.00781 −0.00120.00011 −4E−06 0 S13 −2.6312 −0.0289 −0.1097 0.09541 −0.0347 0.00705−0.0008 5.5E−05 −2E−06 0 S14 −1.0845 −0.2256 0.1217 −0.0516 0.01635−0.0037 0.00055 −5E−05  2.8E−06  −7E−08

Twelfth Example

FIG. 23 is a view illustrating a twelfth example of an optical imagingsystem, and FIG. 24 illustrates aberration curves of the optical imagingsystem of FIG. 23 .

The twelfth example of the optical imaging system includes a first lens1210, a second lens 1220, a third lens 1230, a fourth lens 1240, a fifthlens 1250, a sixth lens 1260, a seventh lens 1270, a filter 1280, animage sensor 1290, and a stop (not shown) disposed between the secondlens 1220 and the third lens 1230.

The first lens 1210 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 1220 has a positive refractive power, a paraxial regionof each of an object-side surface and an image-side surface thereof isconvex.

The third lens 1230 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 1240 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 1250 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 1260 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 1270 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

Two inflection points are formed on the object-side surface of theseventh lens 1270. For example, the object-side surface of the seventhlens 1270 is convex in the paraxial region, becomes concave in a regionoutside the paraxial region, and becomes convex toward an edge thereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 1270. For example, the image-side surface of theseventh lens 1270 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 23 , the stop is disposed at a distanceof 1.158 mm from the object-side surface of the first lens 1210 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 12 listed in Table 55 that appears later in this application.

Table 23 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 23 , and Table 24 belowshows aspherical surface coefficients of the lenses of FIG. 23 . Bothsurfaces of all of the lenses of FIG. 23 are aspherical.

TABLE 23 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First 2.1410.481 1.546 56.114 1.450 S2 Lens 3.251 0.110 1.350 S3 Second 3.253 0.5421.546 56.114 1.285 S4 Lens −15.773 0.025 1.232 S5 Third 8.425 0.2301.679 19.236 1.157 S6 Lens 3.514 0.625 1.095 S7 Fourth 25.986 0.2961.679 19.236 1.265 S8 Lens 15.894 0.230 1.452 S9 Fifth 3.048 0.400 1.54656.114 1.675 S10 Lens 3.616 0.290 2.092 S11 Sixth 3.762 0.400 1.67919.236 2.153 S12 Lens 2.792 0.204 2.476 S13 Seventh 1.614 0.510 1.53753.955 2.938 S14 Lens 1.326 0.196 3.102 S15 Filter Infinity 0.110 1.51864.197 3.420 S16 Infinity 0.65 3.450 S17 Imaging Infinity 3.730 Plane

TABLE 24 K A B C D E F G H J S1 −8.038 0.07067 −0.0797 0.03339 0.00722−0.0491 0.04654 −0.0186 0.00318 −0.0002 S2 −20.594 −0.0019 −0.14940.20409 −0.2922 0.37549 −0.3085 0.14861 −0.0387 0.0042 S3 −0.0908−0.0339 −0.0641 0.13679 −0.2821 0.49215 −0.4815 0.26054 −0.0746 0.00881S4 −0.4822 −0.0436 0.17605 −0.3256 0.19989 0.1916 −0.4291 0.32034−0.1141 0.01622 S5 −1.1841 −0.1073 0.25445 −0.4683 0.49912 −0.28630.05651 0.03245 −0.0229 0.00442 S6 0.87331 −0.0693 0.03569 0.20478−0.8833 1.73278 −1.9742 1.34645 −0.5106 0.08302 S7 −0.4999 −0.03140.01347 −0.2894 0.97164 −1.7181 1.79234 −1.1152 0.38365 −0.0563 S8−1E−06 −0.0273 −0.1177 0.21199 −0.2544 0.21565 −0.1264 0.04694 −0.00930.0007 S9 −41.843 0.16235 −0.3487 0.40163 −0.3105 0.13962 −0.027 −0.00380.00264 −0.0003 S10 −5.1424 0.03971 −0.1364 0.15688 −0.1229 0.06333−0.0212 0.0044 −0.0005 2.6E−05  S11 −2.1666 0.03558 −0.1809 0.19853−0.1438 0.06411 −0.0173 0.00275 −0.0002  9E−06 S12 −0.0207 −0.10430.02386 −0.0063 −0.0007 0.00066 −3E−06 −4E−05 7.3E−06 −4E−07 S13 −0.7948−0.4128 0.18634 −0.0516 0.01005 −0.0015 0.00016 −1E−05 6.2E−07 −1E−08S14 −1.3226 −0.3105 0.17125 −0.0712 0.02129 −0.0043 0.00058 −5E−052.3E−06 −5E−08

Thirteenth Example

FIG. 25 is a view illustrating a thirteenth example of an opticalimaging system, and FIG. 26 illustrates aberration curves of the opticalimaging system of FIG. 25 .

The thirteenth example of the optical imaging system includes a firstlens 1310, a second lens 1320, a third lens 1330, a fourth lens 1340, afifth lens 1350, a sixth lens 1360, a seventh lens 1370, a filter 1380,an image sensor 1390, and a stop (not shown) disposed between the secondlens 1320 and the third lens 1330.

The first lens 1310 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 1320 has a positive refractive power, a paraxial regionof each of an object-side surface and an image-side surface thereof isconvex.

The third lens 1330 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 1340 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 1350 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 1360 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 1370 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

Two inflection points are formed on the object-side surface of theseventh lens 1370. For example, the object-side surface of the seventhlens 1370 is convex in the paraxial region, becomes concave in a regionoutside the paraxial region, and becomes convex toward an edge thereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 1370. For example, the image-side surface of theseventh lens 1370 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 25 , the stop is disposed at a distanceof 1.199 mm from the object-side surface of the first lens 1310 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 13 listed in Table 55 that appears later in this application.

Table 25 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 25 , and Table 26 belowshows aspherical surface coefficients of the lenses of FIG. 25 . Bothsurfaces of all of the lenses of FIG. 25 are aspherical.

TABLE 25 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First2.073751483 0.544876 1.546 56.114 1.340 S2 Lens 3.134870736 0.1375691.302 S3 Second 3.128441404 0.491088 1.546 56.114 1.257 S4 Lens−25.66530563 0.025843 1.217 S5 Third 12.4369312 0.23 1.679 19.236 1.160S6 Lens 3.763271555 0.507804 1.182 S7 Fourth 10.7268766 0.360036 1.54656.114 1.275 S8 Lens 12.82165572 0.348743 1.388 S9 Fifth 4.81387139 0.351.546 56.114 1.576 S10 Lens 5.615039352 0.232774 2.010 S11 Sixth4.324850125 0.438387 1.679 19.236 2.018 S12 Lens 3.02702576 0.1739422.323 S13 Seventh 1.616003022 0.58366 1.546 56.114 2.710 S14 Lens1.373602569 0.214276 2.996 S15 Filter Infinity 0.21 1.518 64.197 3.338S16 Infinity 0.649998 3.403 S17 Imaging Infinity 3.729 Plane

TABLE 26 K A B C D E F G H J S1 −1 −0.0025 −0.0098 0.01527 −0.05560.09254 −0.0925 0.05356 −0.0163 0.00201 S2 −12.778 −0.0004 −0.11370.24524 −0.5515 0.82945 −0.7417 0.38903 −0.1114 0.01344 S3 −1.5504−0.0322 −0.0682 0.18501 −0.5146 0.9207 −0.9127 0.51588 −0.1579 0.02023S4 −7.0537 −0.0404 0.29676 −1.2693 2.88262 −3.9202 3.31284 −1.69740.47955 −0.0571 S5 13.4217 −0.1043 0.54877 −2.1153 4.90531 −7.11066.4814 −3.6045 1.11764 −0.1481 S6 0.76614 −0.0811 0.31536 −1.241 3.19858−5.2874 5.51634 −3.5023 1.23595 −0.1856 S7 −8.3969 −0.0517 −0.04070.14681 −0.3147 0.35116 −0.1879 0.00842 0.03459 −0.0102 S8 6.05573−0.0665 −0.0069 0.01518 −0.01 −0.044 0.09308 −0.0777 0.03087 −0.0047 S9−43.417 0.02293 −0.0192 −0.0479 0.09183 −0.0953 0.05836 −0.0215 0.00436−0.0004 S10 −1.2708 0.04581 −0.1581 0.19889 −0.1589 0.08059 −0.02620.0053 −0.0006  3E−05 S11 −16.611 0.11516 −0.2515 0.23819 −0.15020.06085 −0.0155 0.00238 −0.0002 7.4E−06  S12 0.08869 −0.0573 −0.03130.03451 −0.02 0.00672 −0.0013 0.00014  −7E−06 7.4E−08  S13 −0.815−0.3784 0.16737 −0.0506 0.01278 −0.0027 0.00044 −5E−05 2.7E−06 −7E−08S14 −1.3724 −0.2775 0.15305 −0.0638 0.01949 −0.0041 0.00058 −5E−052.6E−06 −6E−08

Fourteenth Example

FIG. 27 is a view illustrating a fourteenth example of an opticalimaging system, and FIG. 28 illustrates aberration curves of the opticalimaging system of FIG. 27 .

The fourteenth example of the optical imaging system includes a firstlens 1410, a second lens 1420, a third lens 1430, a fourth lens 1440, afifth lens 1450, a sixth lens 1460, a seventh lens 1470, a filter 1480,an image sensor 1490, and a stop (not shown) disposed between the secondlens 1420 and the third lens 1430.

The first lens 1410 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 1420 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 1430 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 1440 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 1450 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 1460 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 1470 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

Two inflection points are formed on the object-side surface of theseventh lens 1470. For example, the object-side surface of the seventhlens 1470 is convex in the paraxial region, becomes concave in a regionoutside the paraxial region, and becomes convex toward an edge thereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 1470. For example, the image-side surface of theseventh lens 1470 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 27 , the stop is disposed at a distanceof 1.077 mm from the object-side surface of the first lens 1410 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 14 listed in Table 55 that appears later in this application.

Table 27 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 27 , and Table 28 belowshows aspherical surface coefficients of the lenses of FIG. 27 . Bothsurfaces of all of the lenses of FIG. 27 are aspherical.

TABLE 27 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First2.118305139 0.467301 1.546 56.114 1.360 S2 Lens 2.746507151 0.0882911.343 S3 Second 2.805315991 0.495083 1.546 56.114 1.313 S4 Lens29.97218136 0.026058 1.266 S5 Third 5.620498788 0.273577 1.679 19.2361.212 S6 Lens 2.858933317 0.365293 1.199 S7 Fourth 6.085110345 0.4157151.546 56.114 1.285 S8 Lens 19.14383505 0.530007 1.350 S9 Fifth5.783090879 0.4 1.679 19.236 1.600 S10 Lens 4.564410244 0.188701 2.100S11 Sixth 2.807723971 0.444625 1.546 56.114 1.903 S12 Lens 3.201153970.276382 2.470 S13 Seventh 1.650083939 0.458527 1.546 56.114 2.646 S14Lens 1.194405383 0.21044 2.806 S15 Filter Infinity 0.21 1.518 64.1973.241 S16 Infinity 0.649999 3.319 S17 Imaging Infinity 3.729 Plane

TABLE 28 K A B C D E F G H J S1 −1 −0.0103 0.00782 −0.0588 0.09254−0.0904 0.0486 −0.0119 0.00038 0.00021 S2 −13.05 0.02575 −0.1274 0.035040.06172 −0.0405 0.00034 0.0049 −0.0007 −0.0001 S3 −1.2154 −0.0166−0.0602 −0.0171 0.06247 0.04814 −0.1007 0.05111 −0.0092 0.00015 S4−7.0515 −0.047 0.26813 −0.8387 1.45463 −1.5426 1.02637 −0.4201 0.09736−0.0099 S5 8.8287 −0.0982 0.31064 −0.8268 1.45377 −1.7174 1.3464 −0.67150.1944 −0.025 S6 1.72172 −0.0695 0.09394 −0.1196 0.14214 −0.2108 0.2773−0.2257 0.09968 −0.0182 S7 −1.4309 −0.0448 −0.0056 0.02993 −0.0484−0.0039 0.08562 −0.1013 0.05106 −0.0095 S8 5.85918 −0.0455 −0.01330.03368 −0.0729 0.09223 −0.0766 0.04111 −0.0128 0.00184 S9 −43.5210.00081 −0.0239 0.02218 −0.0173 0.00514 −0.0002 −0.0003 5.4E−05 4.8E−06S10 −11.855 −0.0163 −0.0578 0.08324 −0.067 0.0334 −0.0109 0.00227−0.0003 1.4E−05 S11 −16.199 0.10244 −0.1959 0.19307 −0.1564 0.07971−0.0243 0.00436 −0.0004 1.8E−05 S12 0.16678 −0.0913 0.11002 −0.10750.05366 −0.0157 0.00287 −0.0003 2.1E−05  −6E−07 S13 −0.8022 −0.43750.2118 −0.049 0.00155 0.00209 −0.0006 7E−05 −4E−06  1.1E−07 S14 −1.407−0.3709 0.24995 −0.1268 0.04606 −0.0114 0.00184 −0.0002 1.1E−05  −3E−07

Fifteenth Example

FIG. 29 is a view illustrating a fifteenth example of an optical imagingsystem, and FIG. 30 illustrates aberration curves of the optical imagingsystem of FIG. 29 .

The fifteenth example of the optical imaging system includes a firstlens 1510, a second lens 1520, a third lens 1530, a fourth lens 1540, afifth lens 1550, a sixth lens 1560, a seventh lens 1570, a filter 1580,an image sensor 1590, and a stop (not shown) disposed between the secondlens 1520 and the third lens 1530.

The first lens 1510 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 1520 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 1530 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 1540 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 1550 has a negative refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The sixth lens 1560 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 1570 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

Two inflection points are formed on the object-side surface of theseventh lens 1570. For example, the object-side surface of the seventhlens 1570 is convex in the paraxial region, becomes concave in a regionoutside the paraxial region, and becomes convex toward an edge thereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 1570. For example, the image-side surface of theseventh lens 1570 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 29 , the stop is disposed at a distanceof 1.093 mm from the object-side surface of the first lens 1510 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 15 listed in Table 55 that appears later in this application.

Table 29 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 29 , and Table 30 belowshows aspherical surface coefficients of the lenses of FIG. 29 . Bothsurfaces of all of the lenses of FIG. 29 are aspherical.

TABLE 29 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.942384 0.793197 1.5441 56.1138 1.444 S2 Lens 9.934274 0.1 1.402 S3Second 4.267935 0.2 1.6612 20.3532 1.333 S4 Lens 2.440295 0.233353 1.244S5 Third 3.840803 0.337213 1.5441 56.1138 1.192 S6 Lens 7.222946 0.295111.184 S7 Fourth 10.23439 0.319724 1.5441 56.1138 1.207 S8 Lens 26.516450.281354 1.283 S9 Fifth −5.15487 0.401781 1.651 21.4942 1.301 S10 Lens−9.64405 0.147362 1.573 S11 Sixth 3.891237 0.810422 1.5441 56.1138 1.674S12 Lens 4.075702 0.213783 2.386 S13 Seventh 3.034895 0.604963 1.534855.7115 2.823 S14 Lens 1.86E+00 0.14844 3.015 S15 Filter Infinity0.104878 1.5182 64.1973 3.181842592 S16 Infinity 0.645122 3.2137538 S17Imaging Infinity 3.531597426 Plane

TABLE 30 K A B C D E F G H S1 0.1119 −0.0077 0.0183 −0.0487 0.065−0.0521 0.0239 −0.0059 0.0006 S2 −26.097 −0.0447 0.0639 −0.0885 0.0802−0.0469 0.017 −0.0035 0.0003 S3 −57.375 −0.0493 0.0357 −0.0459 0.0544−0.0363 0.0155 −0.0043 0.0006 S4 −8.3441 −0.0492 0.0929 −0.1764 0.2477−0.2307 0.1429 −0.0507 0.0075 S5 1.5878 −0.035 0.0435 −0.1062 0.1611−0.1672 0.1224 −0.0475 0.0073 S6 −0.0241 −0.0418 −0.0007 0.0745 −0.19840.2528 −0.1625 0.0529 −0.0057 S7 −66.305 −0.0937 0.0545 −0.2 0.3691−0.4471 0.3394 −0.1416 0.0248 S8 19.549 −0.0871 0.0483 −0.1552 0.2353−0.2493 0.1709 −0.0651 0.0103 S9 7.2773 −0.0493 0.0331 −0.0549 0.0336−0.0223 0.0129 −0.0036 0 S10 28.608 −0.1159 0.0778 −0.0525 0.0237−0.0054 0.0001 0.0002 0 S11 −51.379 −0.0153 −0.0854 0.093 −0.0763 0.0386−0.011 0.0013 0 S12 −31.504 −0.0086 0.0015 −0.0075 0.0041 −0.0012 0.0002−1E−05 0 S13 −0.4733 −0.2404 0.1187 −0.0378 0.0079 −0.0011 8E−05 −4E−067E−08 S14 −0.7879 −0.2013 0.0915 −0.0345 0.009 −0.0015 0.0001 −7E−062E−07

Sixteenth Example

FIG. 31 is a view illustrating a sixteenth example of an optical imagingsystem, and FIG. 32 illustrates aberration curves of the optical imagingsystem of FIG. 31 .

The sixteenth example of the optical imaging system includes a firstlens 1610, a second lens 1620, a third lens 1630, a fourth lens 1640, afifth lens 1650, a sixth lens 1660, a seventh lens 1670, a filter 1680,an image sensor 1690, and a stop (not shown) disposed between the secondlens 1620 and the third lens 1630.

The first lens 1610 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 1620 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 1630 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 1640 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 1650 has a negative refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The sixth lens 1660 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 1670 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

Two inflection points are formed on the object-side surface of theseventh lens 1670. For example, the object-side surface of the seventhlens 1670 is convex in the paraxial region, becomes concave in a regionoutside the paraxial region, and becomes convex toward an edge thereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 1670. For example, the image-side surface of theseventh lens 1670 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 31 , the stop is disposed at a distanceof 0.919 mm from the object-side surface of the first lens 1610 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 16 listed in Table 55 that appears later in this application.

Table 31 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 31 , and Table 32 belowshows aspherical surface coefficients of the lenses of FIG. 31 . Bothsurfaces of all of the lenses of FIG. 31 are aspherical.

TABLE 31 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.739587 0.598921 1.5441 56.1138 1.100 S2 Lens 11.74576 0.1 1.087 S3Second 4.594781 0.22 1.6612 20.3532 1.063 S4 Lens 2.200821 0.1968961.082 S5 Third 3.001538 0.333024 1.5441 56.1138 1.036 S6 Lens 4.9499570.220769 1.050 S7 Fourth 12.04233 0.308386 1.5441 56.1138 1.051 S8 Lens17.11235 0.265994 1.143 S9 Fifth −7.00397 0.297417 1.5441 56.1138 1.199S10 Lens −7.82081 0.110621 1.343 S11 Sixth 2.821263 0.520889 1.544156.1138 1.400 S12 Lens 3.003035 0.211839 2.055 S13 Seventh 2.3697540.578763 1.5348 55.7115 2.394 S14 Lens 1.48E+00 0.136479 2.614 S15Filter Infinity 0.21 1.5182 64.1973 2.875305214 S16 Infinity 0.592.94119348 S17 Imaging Infinity 3.261482111 Plane

TABLE 32 K A B C D E F G H S1 0.1283 −0.0055 0.0045 −0.018 0.0078 0.0301−0.063 0.046 −0.013 S2 −30.976 −0.0561 0.0444 0.0388 −0.2372 0.4368−0.4385 0.2311 −0.0505 S3 −55.147 −0.0853 0.0161 0.2247 −0.6095 0.9607−0.9142 0.4783 −0.1042 S4 −6.2418 −0.0492 0.0165 0.1209 −0.3038 0.4429−0.3247 0.1012 0.0018 S5 1.4715 −0.0198 0.0181 −0.2874 0.8872 −1.61381.7719 −1.012 0.234 S6 −2.9758 −0.0369 0.0559 −0.2665 0.6033 −0.97540.967 −0.4745 0.0967 S7 −55.862 −0.1542 0.1102 −0.4806 1.1073 −1.65891.3653 −0.5002 0.0586 S8 −87.891 −0.144 0.1419 −0.5705 1.2436 −1.72211.4048 −0.6059 0.1078 S9 5.6449 −0.0669 0.1168 −0.4406 0.758 −0.76880.403 −0.0844 0 S10 28.194 −0.1694 0.0795 −0.1626 0.3248 −0.3223 0.1516−0.0266 0 S11 −29.003 0.0237 −0.2637 0.2396 −0.1608 0.0735 −0.02590.0049 0 S12 −43.551 0.0645 −0.1366 0.0918 −0.0389 0.0101 −0.0014  8E−050 S13 −0.6727 −0.4248 0.2545 −0.086 0.0183 −0.0024 0.0002 −9E−06 2E−07S14 −0.8377 −0.3391 0.2016 −0.0975 0.0328 −0.0071 0.0009 −6E−05 2E−06

Seventeenth Example

FIG. 33 is a view illustrating a seventeenth example of an opticalimaging system, and FIG. 34 illustrates aberration curves of the opticalimaging system of FIG. 33 .

The sixteenth example of the optical imaging system includes a firstlens 1710, a second lens 1720, a third lens 1730, a fourth lens 1740, afifth lens 1750, a sixth lens 1760, a seventh lens 1770, a filter 1780,an image sensor 1790, and a stop (not shown) disposed in front of thefirst lens 1710.

The first lens 1710 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 1720 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 1730 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 1740 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 1750 has a negative refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The sixth lens 1760 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 1770 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

One inflection point is formed on the object-side surface of the seventhlens 1770. For example, the object-side surface of the seventh lens 1770is convex in the paraxial region, and becomes concave toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 1770. For example, the image-side surface of theseventh lens 1770 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 33 , the stop is disposed at a distanceof 0.250 mm from the object-side surface of the first lens 1710 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 17 listed in Table 55 that appears later in this application.

Table 33 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 33 , and Table 34 belowshows aspherical surface coefficients of the lenses of FIG. 33 . Bothsurfaces of all of the lenses of FIG. 33 are aspherical.

TABLE 33 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.721083 0.634874 1.5441 56.1138 1.100 S2 Lens 11.45706 0.121172 1.071S3 Second 119.1721 0.203286 1.6612 20.3532 1.057 S4 Lens 4.4757870.084345 1.043 S5 Third 4.525763 0.310946 1.5441 56.1138 1.051 S6 Lens20.60825 0.215768 1.015 S7 Fourth 13.21519 0.236935 1.5441 56.1138 1.019S8 Lens 16.27332 0.210349 1.070 S9 Fifth −6.57315 0.41188 1.651 21.49421.076 S10 Lens −10.4553 0.371031 1.320 S11 Sixth 3.477886 0.6317751.5441 56.1138 1.556 S12 Lens 3.199354 0.267164 2.337 S13 Seventh2.880384 0.505977 1.5441 56.1138 2.489 S14 Lens 1.71E+00 0.138438 2.666S15 Filter Infinity 0.21 1.5182 64.1973 3.102058013 S16 Infinity 0.593.177033741 S17 Imaging Infinity 3.529142415 Plane

TABLE 34 K A B C D E F G H S1 0.0432 −0.0088 0.0131 −0.0627 0.1199−0.1345 0.077 −0.018 −0.0004 S2 −26.097 −0.0562 0.051 −0.0514 0.0595−0.0683 0.0462 −0.0139 −7E−05  S3 −99 −0.1283 0.1953 −0.2779 0.5135−0.8812 0.9662 −0.5723 0.1395 S4 −16.567 −0.0971 0.1552 −0.3608 0.985−2.059 2.5647 −1.6683 0.4378 S5 −1.6774 −0.0377 0.065 −0.4515 1.687−3.5163 4.2391 −2.6607 0.6752 S6 57.913 −0.0559 0.0533 −0.341 1.3373−2.8539 3.4811 −2.2114 0.5781 S7 −66.305 −0.1749 −0.0635 0.0963 −0.20610.5819 −0.9 0.6874 −0.1979 S8 19.549 −0.1228 −0.0686 0.0207 0.1647−0.2695 0.1725 −0.0616 0.0161 S9 29.709 −0.0709 0.0826 −0.3062 0.6009−0.6459 0.3344 −0.0761 0 S10 −31.338 −0.1255 0.1076 −0.1494 0.1908−0.1423 0.0506 −0.0065 0 S11 −46.453 0.0038 −0.1455 0.1534 −0.126 0.0705−0.0225 0.0029 0 S12 −31.504 0.0093 −0.0326 0.0149 −0.0033 0.0003 −1E−05−7E−07 0 S13 −0.5233 −0.2947 0.1709 −0.0627 0.0154 −0.0025 0.0003 −1E−053E−07 S14 −0.8257 −0.2584 0.1353 −0.0565 0.0166 −0.0032 0.0004 −3E−057E−07

Eighteenth Example

FIG. 35 is a view illustrating an eighteenth example of an opticalimaging system, and FIG. 36 illustrates aberration curves of the opticalimaging system of FIG. 35 .

The eighteenth example of the optical imaging system includes a firstlens 1810, a second lens 1820, a third lens 1830, a fourth lens 1840, afifth lens 1850, a sixth lens 1860, a seventh lens 1870, a filter 1880,an image sensor 1890, and a stop (not shown) disposed between the firstlens 1810 and the second lens 1820.

The first lens 1810 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 1820 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 1830 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 1840 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 1850 has a positive refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The sixth lens 1860 has a positive refractive power, a paraxial regionof each of an object-side surface and an image-side surface thereof isconvex.

The seventh lens 1870 has a negative refractive power, a paraxial regionof each of an object-side surface and an image-side surface thereof isconcave.

One inflection point is formed on the object-side surface of the seventhlens 1870. For example, the object-side surface of the seventh lens 1870is concave in the paraxial region, and becomes convex toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 1870. For example, the image-side surface of theseventh lens 1870 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 35 , the stop is disposed at a distanceof 0.768 mm from the object-side surface of the first lens 1810 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 18 listed in Table 55 that appears later in this application.

Table 35 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 35 , and Table 36 belowshows aspherical surface coefficients of the lenses of FIG. 35 . Bothsurfaces of all of the lenses of FIG. 35 are aspherical.

TABLE 35 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.954768 0.767754 1.5441 56.1138 1.300 S2 Lens 7.885948 0.100479 1.209S3 Second 4.828842 0.23659 1.6612 20.3532 1.213 S4 Lens 2.8661550.449288 1.265 S5 Third 8.865496 0.484453 1.5441 56.1138 1.268 S6 Lens16.67462 0.275209 1.403 S7 Fourth 10.67145 0.369792 1.5441 56.1138 1.456S8 Lens 22.44715 0.280107 1.642 S9 Fifth −4.38165 0.271148 1.661220.3532 1.769 S10 Lens −4.38283 0.104957 2.019 S11 Sixth 7.9522270.567669 1.5441 56.1138 2.357 S12 Lens −3.03675 0.464825 2.647 S13Seventh −7.50793 0.32 1.5441 56.1138 3.123 S14 Lens 1.80E+00 0.1891243.381 S15 Filter Infinity 0.11 1.5183 64.1664 3.605133315 S16 Infinity0.658604 3.63479604 S17 Imaging Infinity 3.930447751 Plane

TABLE 36 K A B C D E F G H J S1 −0.8127 0.0142 0.0092 −0.0157 0.0206−0.0137 0.0037 0.0003 −0.0003 0 S2 5.6538 −0.0472 0.0448 −0.0321 0.0158−0.0059 0.001 0.0004 −0.0002 0 S3 −10.668 −0.0824 0.0792 −0.0266 −0.01580.0274 −0.0153 0.0039 −0.0004 0 S4 −0.1737 −0.0508 0.0303 0.1129 −0.30630.4131 −0.3101 0.1243 −0.0205 0 S5 0 −0.0377 0.0156 −0.0597 0.0773−0.0624 0.0268 −0.0045 3E−05 0 S6 0 −0.0706 0.0482 −0.0575 −0.00090.0419 −0.0392 0.0166 −0.0028 0 S7 46.114 −0.1374 0.0451 0.0051 −0.02980.0052 0.0076 −0.0027 0.0001 0 S8 99 −0.1096 −0.0451 0.1394 −0.15190.0948 −0.0333 0.006 −0.0004 0 S9 −99 −0.0865 0.1152 −0.1605 0.1182−0.0466 0.0099 −0.0011 5E−05 0 S10 −0.2245 0.0593 −0.0542 0.0004 0.0119−0.0044 0.0007 −5E−05  1E−06 0 S11 −99 0.1031 −0.1094 0.0579 −0.02160.005 −0.0007 4E−05 −1E−06  0 S12 −4.7232 0.1521 −0.1221 0.0592 −0.02020.0046 −0.0007 5E−05 −2E−06  0 S13 −1.1986 −0.0323 −0.0724 0.0507−0.0141 0.0021 −0.0002 8E−06 −2E−07  0 S14 −1.2644 −0.1675 0.0662−0.0204 0.0047 −0.0007 8E−05 −5E−06  2E−07 −2E−09

Nineteenth Example

FIG. 37 is a view illustrating a nineteenth example of an opticalimaging system, and FIG. 38 illustrates aberration curves of the opticalimaging system of FIG. 37 .

The nineteenth example of the optical imaging system includes a firstlens 1910, a second lens 1920, a third lens 1930, a fourth lens 1940, afifth lens 1950, a sixth lens 1960, a seventh lens 1970, a filter 1980,an image sensor 1990, and a stop (not shown) disposed between the firstlens 1910 and the second lens 1920.

The first lens 1910 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 1920 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 1930 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 1940 has a positive refractive power, a paraxial regionof each of an object-side surface and an image-side surface thereof isconvex.

The fifth lens 1950 has a negative refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The sixth lens 1960 has a positive refractive power, a paraxial regionof each of an object-side surface and an image-side surface thereof isconvex.

The seventh lens 1970 has a negative refractive power, a paraxial regionof each of an object-side surface and an image-side surface thereof isconcave.

One inflection point is formed on the object-side surface of the seventhlens 1970. For example, the object-side surface of the seventh lens 1970is concave in the paraxial region, and becomes convex toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 1970. For example, the image-side surface of theseventh lens 1970 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 37 , the stop is disposed at a distanceof 0.624 mm from the object-side surface of the first lens 1910 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 19 listed in Table 55 that appears later in this application.

Table 37 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 37 , and Table 38 belowshows aspherical surface coefficients of the lenses of FIG. 37 . Bothsurfaces of all of the lenses of FIG. 37 are aspherical.

TABLE 37 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.777275 0.623828 1.5441 56.1138 1.217 S2 Lens 6.456568 0.1 1.158 S3Second 4.41033 0.236253 1.6612 20.3532 1.157 S4 Lens 2.658351 0.4137851.184 S5 Third 6.587882 0.464049 1.5441 56.1138 1.177 S6 Lens 10.523280.17773 1.282 S7 Fourth 13.47488 0.362661 1.5441 56.1138 1.306 S8 Lens−20.23 0.232536 1.444 S9 Fifth −3.18309 0.2 1.6612 20.3532 1.456 S10Lens −4.21505 0.1 1.625 S11 Sixth 6.764633 0.608917 1.5441 56.1138 2.207S12 Lens −2.87919 0.421093 2.145 S13 Seventh −6.99582 0.32 1.544156.1138 2.280 S14 Lens 1.69E+00 0.14847 3.165 S15 Filter Infinity 0.111.5183 64.1664 2.850141022 S16 Infinity 0.680678 2.888122651 S17 ImagingInfinity 3.276451571 Plane

TABLE 38 K A B C D E F G H J S1 −0.5383 0.0108 0.0209 −0.0477 0.0729−0.06 0.0243 −0.0027 −0.0007 0 S2 5.8135 −0.0459 0.0189 0.0248 −0.05590.0486 −0.026 0.0094 −0.0019 0 S3 −10.011 −0.085 0.066 0.02 −0.08080.0756 −0.0332 0.0069 −0.0006 0 S4 −0.1875 −0.0544 0.0068 0.26 −0.66550.9329 −0.7519 0.3313 −0.061 0 S5 0 −0.0569 0.0063 −0.0275 −0.00460.0401 −0.0485 0.0264 −0.0053 0 S6 0 −0.0775 −0.0976 0.271 −0.53290.5567 −0.3323 0.1128 −0.0176 0 S7 47.015 −0.0863 −0.1024 0.2298 −0.27210.1091 0.0392 −0.0378 0.0065 0 S8 −99 −0.0603 −0.0348 0.057 −0.04680.0241 −0.007 0.001 −6E−05 0 S9 −99 −0.2672 0.6153 −0.9745 0.9138−0.5236 0.1786 −0.0332 0.0026 0 S10 −0.0701 0.0268 −0.0377 −0.0253 0.035−0.0133 0.0024 −0.0002  7E−06 0 S11 −97.721 0.1556 −0.2109 0.1424−0.0678 0.02 −0.0033 0.0003 −1E−05 0 S12 −1.5998 0.2298 −0.1811 0.0905−0.0342 0.0088 −0.0014 0.0001 −4E−06 0 S13 4.8341 −0.1142 −0.0024 0.0306−0.013 0.0027 −0.0003 2E−05 −5E−07 0 S14 −1.0993 −0.2618 0.1449 −0.05990.0171 −0.0032 0.0004 −3E−05   1E−06 −2E−08

Twentieth Example

FIG. 39 is a view illustrating a twentieth example of an optical imagingsystem, and FIG. 40 illustrates aberration curves of the optical imagingsystem of FIG. 39 .

The twentieth example of the optical imaging system includes a firstlens 2010, a second lens 2020, a third lens 2030, a fourth lens 2040, afifth lens 2050, a sixth lens 2060, a seventh lens 2070, a filter 2080,an image sensor 2090, and a stop (not shown) disposed between the firstlens 2010 and the second lens 2020.

The first lens 2010 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 2020 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 2030 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 2040 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 2050 has a positive refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The sixth lens 2060 has a positive refractive power, a paraxial regionof each of an object-side surface and an image-side surface thereof isconvex.

The seventh lens 2070 has a negative refractive power, a paraxial regionof each of an object-side surface and an image-side surface thereof isconcave.

No inflection point is formed on the object-side surface of the seventhlens 2070.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 2070. For example, the image-side surface of theseventh lens 2070 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 39 , the stop is disposed at a distanceof 0.641 mm from the object-side surface of the first lens 2010 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 20 listed in Table 55 that appears later in this application.

Table 39 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 39 , and Table 40 belowshows aspherical surface coefficients of the lenses of FIG. 39 . Bothsurfaces of all of the lenses of FIG. 39 are aspherical.

TABLE 39 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.797739 0.640884 1.5441 56.1138 1.270 S2 Lens 3.742203 0.119077 1.211S3 Second 3.057321 0.22 1.6612 20.3532 1.190 S4 Lens 2.795092 0.3930791.130 S5 Third 10.62153 0.464034 1.5441 56.1138 1.153 S6 Lens 9.0265620.1 1.289 S7 Fourth 7.987624 0.36214 1.5441 56.1138 1.328 S8 Lens138.7678 0.233384 1.454 S9 Fifth −4.1765 0.219829 1.6612 20.3532 1.518S10 Lens −4.13945 0.1 1.656 S11 Sixth 4.613403 0.608917 1.5441 56.11382.000 S12 Lens −3.59211 0.472598 2.038 S13 Seventh −7.00157 0.32 1.544156.1138 2.049 S14 Lens 1.69E+00 0.110689 2.685 S15 Filter Infinity 0.211.5183 64.1664 2.941536401 S16 Infinity 0.549988 3.008025404 S17 ImagingInfinity 3.291609937 Plane

TABLE 40 K A B C D E F G H J S1 −0.812 0.0136 0.0311 −0.0769 0.1226−0.1099 0.0531 −0.0116 0.0005 0 S2 −6.6917 −0.0631 0.0174 0.0714 −0.16480.1763 −0.1086 0.0376 −0.0059 0 S3 −14.579 −0.0707 0.0068 0.1319 −0.21290.173 −0.0715 0.0127 −0.0005 0 S4 −0.188 −0.0614 −0.0138 0.3338 −0.73920.9251 −0.6781 0.276 −0.0477 0 S5 0 −0.0572 0.0435 −0.1733 0.2724−0.2421 0.0931 −0.0042 −0.0038 0 S6 0 −0.1356 −0.0309 0.2183 −0.55470.6931 −0.486 0.1856 −0.0304 0 S7 30.023 −0.2107 0.0007 0.1568 −0.28540.2586 −0.1154 0.0236 −0.0019 0 S8 −99 −0.1858 −0.0192 0.2616 −0.41110.3392 −0.1538 0.0357 −0.0033 0 S9 −98.995 −0.2935 0.5043 −0.5157 0.2657−0.0658 0.0056 0.0005 −8E−05 0 S10 −0.0701 −0.0775 0.2223 −0.2703 0.1529−0.0452 0.0073 −0.0006  2E−05 0 S11 −97.878 0.1479 −0.1956 0.1288−0.0598 0.0172 −0.0028 0.0002 −8E−06 0 S12 1.4166 0.1234 −0.1416 0.087−0.0341 0.0088 −0.0014 0.0001 −4E−06 0 S13 9.5503 −0.2864 0.1096 0.0149−0.0214 0.0064 −0.0009  6E−05 −2E−06 0 S14 −1.2786 −0.3076 0.1777−0.0626 0.0143 −0.0022 0.0002 −1E−05  5E−07 −7E−09

Twenty-First Example

FIG. 41 is a view illustrating a twenty-first example of an opticalimaging system, and FIG. 42 illustrates aberration curves of the opticalimaging system of FIG. 41 .

The twenty-first example of the optical imaging system includes a firstlens 2110, a second lens 2120, a third lens 2130, a fourth lens 2140, afifth lens 2150, a sixth lens 2160, a seventh lens 2170, a filter 2180,an image sensor 2190, and a stop (not shown) disposed between the secondlens 2120 and the third lens 2130.

The first lens 2110 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 2120 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 2130 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 2140 has a positive refractive power, a paraxial regionof each of an object-side surface and an image-side surface thereof isconvex.

The fifth lens 2150 has a negative refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The sixth lens 2160 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 2170 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

One inflection point is formed on the object-side surface of the seventhlens 2170. For example, the object-side surface of the seventh lens 2170is convex in the paraxial region, and becomes concave toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 2170. For example, the image-side surface of theseventh lens 2170 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 41 , the stop is disposed at a distanceof 1.070 mm from the object-side surface of the first lens 2110 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 21 listed in Table 55 that appears later in this application.

Table 41 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 41 , and Table 42 belowshows aspherical surface coefficients of the lenses of FIG. 41 . Bothsurfaces of all of the lenses of FIG. 41 are aspherical.

TABLE 41 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.601328 0.4703 1.55 56.11 1.10 S2 Lens 6.723341 0.02 1.07 S3 Second1.565428 0.18945 1.66 20.40 1.00 S4 Lens 1.191167 0.385927 0.91 S5 Third3.880104 0.1 1.66 20.40 0.90 S6 Lens 3.812373 0.220903 0.93 S7 Fourth8.909025 0.639932 1.55 56.11 1.10 S8 Lens −75.7282 0.331313 1.28 S9Fifth −12.2751 0.14904 1.65 21.49 1.33 S10 Lens −15.1629 0.079448 1.57S11 Sixth 4.140002 0.553938 1.65 21.49 1.60 S12 Lens 3.897447 0.2430332.00 S13 Seventh 1.919931 0.511414 1.54 55.71 2.82 S14 Lens 1.4533130.182833 2.58 S15 Filter Infinity 0.11 1.52 64.20 2.89 S16 Infinity0.532581 2.93 S17 Imaging Infinity 3.26 Plane

TABLE 42 K A B C D E F G H J S1 −0.1212 0.0104 0.0128 −0.0281 0.0435−0.0381 0.0173 −0.0033 0 0 S2 29.637 −0.0905 0.3333 −0.7525 0.9665−0.741 0.3153 −0.0585 0 0 S3 −2.48 −0.117 0.4074 −0.8715 1.1061 −0.82490.3423 −0.062 0 0 S4 −0.6581 −0.0925 0.1463 −0.1165 −0.011 0.2266−0.2114 0.0722 0 0 S5 3.0804 −0.1259 0.1776 −0.2375 0.4049 −0.44250.2969 −0.0837 0 0 S6 10.659 −0.1644 0.1692 −0.1502 0.1444 −0.07620.0151 −0.0003 0 0 S7 21.918 −0.0617 0.0459 −0.0379 0.0564 −0.03640.0097 −0.0009 0 0 S8 25.736 −0.0713 0.0217 −0.0106 0.0072 −0.00230.0003 −2E−05 0 0 S9 1.6857 −0.1436 0.2565 −0.4332 0.4184 −0.2461 0.0826−0.0124 0 0 S10 75.072 −0.1186 0.1217 −0.1545 0.1026 −0.0332 0.005−0.0003 0 0 S11 −52.836 0.0701 −0.2199 0.2058 −0.1343 0.0526 −0.01060.0009 0 0 S12 0 −0.0521 −0.0332 0.0285 −0.0129 0.0028 3E−06 −0.00012E−05 −5E−07 S13 −0.9427 −0.3217 0.0977 −0.0029 −0.0058 0.0017 −0.0002 2E−05 −4E−07  0 S14 −1.0048 −0.2798 0.1282 −0.0461 0.0122 −0.00220.0002 −1E−05 4E−07 0

Twenty-Second Example

FIG. 43 is a view illustrating a twenty-second example of an opticalimaging system, and FIG. 44 illustrates aberration curves of the opticalimaging system of FIG. 43 .

The twenty-second example of the optical imaging system includes a firstlens 2210, a second lens 2220, a third lens 2230, a fourth lens 2240, afifth lens 2250, a sixth lens 2260, a seventh lens 2270, a filter 2280,an image sensor 2290, and a stop (not shown) disposed between the secondlens 2220 and the third lens 2230.

The first lens 2210 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 2220 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 2230 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 2240 has a positive refractive power, a paraxial regionof each of an object-side surface and an image-side surface thereof isconvex.

The fifth lens 2250 has a negative refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The sixth lens 2260 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 2270 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

One inflection point is formed on the object-side surface of the seventhlens 2270. For example, the object-side surface of the seventh lens 2270is convex in the paraxial region, and becomes concave toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 2270. For example, the image-side surface of theseventh lens 2270 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 43 , the stop is disposed at a distanceof 1.050 mm from the object-side surface of the first lens 2210 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 22 listed in Table 55 that appears later in this application.

Table 43 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 43 , and Table 44 belowshows aspherical surface coefficients of the lenses of FIG. 43 . Bothsurfaces of all of the lenses of FIG. 43 are aspherical.

TABLE 43 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.618399 0.481078 1.55 56.11 1.11 S2 Lens 6.899203 0.02 1.08 S3 Second1.572709 0.21298 1.66 20.40 1.01 S4 Lens 1.198393 0.337014 0.91 S5 Third3.880395 0.1 1.66 20.40 0.90 S6 Lens 3.81266 0.18744 0.93 S7 Fourth9.071729 0.55292 1.55 56.11 1.08 S8 Lens −55.0996 0.304351 1.24 S9 Fifth−12.1837 0.114265 1.65 21.49 1.30 S10 Lens −15.0249 0.060547 1.57 S11Sixth 4.118358 0.587621 1.65 21.49 1.52 S12 Lens 3.854992 0.224328 1.90S13 Seventh 1.919931 0.553429 1.54 55.71 2.82 S14 Lens 1.453313 0.1815522.49 S15 Filter Infinity 0.11 1.52 64.20 2.83 S16 Infinity 0.533801 2.87S17 Imaging Infinity 3.27 Plane

TABLE 44 K A B C D E F G H S1 −0.2038 0.0111 0.0146 −0.0331 0.0534−0.0486 0.023 −0.0046 0 S2 30.534 −0.0868 0.313 −0.693 0.872 −0.6550.273 −0.0496 0 S3 −2.347 −0.114 0.3865 −0.8113 1.0115 −0.741 0.3021−0.0538 0 S4 −0.7241 −0.0836 0.1372 −0.1055 −0.0097 0.1953 −0.17780.0592 0 S5 3.0804 −0.1259 0.1776 −0.2375 0.4049 −0.4425 0.2969 −0.08370 S6 10.659 −0.1644 0.1692 −0.1502 0.1444 −0.0762 0.0151 −0.0003 0 S721.918 −0.0617 0.0459 −0.0379 0.0564 −0.0364 0.0097 −0.0009 0 S8 25.736−0.0713 0.0217 −0.0106 0.0072 −0.0023 0.0003 −2E−05 0 S9 1.6857 −0.14360.2565 −0.4332 0.4184 −0.2461 0.0826 −0.0124 0 S10 75.072 −0.1186 0.1217−0.1545 0.1026 −0.0332 0.005 −0.0003 0 S11 −52.836 0.0701 −0.2199 0.2058−0.1343 0.0526 −0.0106 0.0009 0 S12 −34.09 0.0153 −0.0851 0.0637 −0.03020.0086 −0.0013  8E−05 0 S13 −0.9427 −0.3217 0.0977 −0.0029 −0.00580.0017 −0.0002  2E−05 −4E−07 S14 −1.0048 −0.2798 0.1282 −0.0461 0.0122−0.0022 0.0002 −1E−05  4E−07

Twenty-Third Example

FIG. 45 is a view illustrating a twenty-third example of an opticalimaging system, and FIG. 46 illustrates aberration curves of the opticalimaging system of FIG. 45 .

The twenty-second example of the optical imaging system includes a firstlens 2310, a second lens 2320, a third lens 2330, a fourth lens 2340, afifth lens 2350, a sixth lens 2360, a seventh lens 2370, a filter 2380,an image sensor 2390, and a stop (not shown) disposed between the secondlens 2320 and the third lens 2330.

The first lens 2310 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 2320 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 2330 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 2340 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 2350 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 2360 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 2370 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

Two inflection points are formed on the object-side surface of theseventh lens 2370. For example, the object-side surface of the seventhlens 2370 is convex in the paraxial region, becomes concave in a regionoutside the paraxial region, and becomes convex toward an edge thereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 2370. For example, the image-side surface of theseventh lens 2370 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 45 , the stop is disposed at a distanceof 1.082 mm from the object-side surface of the first lens 2310 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 23 listed in Table 55 that appears later in this application.

Table 45 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 45 , and Table 46 belowshows aspherical surface coefficients of the lenses of FIG. 45 . Bothsurfaces of all of the lenses of FIG. 45 are aspherical.

TABLE 45 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First2.33687036 0.432116 1.546 56.114 1.365 S2 Lens 2.85742179 0.025 1.352 S3Second 2.542185152 0.6 1.546 56.114 1.326 S4 Lens 36.41699638 0.0251.254 S5 Third 8.193690072 0.23 1.679 19.236 1.217 S6 Lens 3.3335842630.3221813 1.227 S7 Fourth 6.342713056 0.57111 1.546 56.114 1.322 S8 Lens11.23703124 0.4048969 1.372 S9 Fifth 18.96145717 0.5066546 1.546 56.1141.590 S10 Lens 6.683687757 0.0731741 1.931 S11 Sixth 2.3547684180.6194256 1.546 56.114 2.023 S12 Lens 2.565132372 0.1492156 2.456 S13Seventh 1.424653122 0.5400405 1.546 56.114 2.710 S14 Lens 1.2821857630.3444098 2.982 S15 Filter Infinity 0.21 1.518 64.197 3.258 S16 Infinity0.6497077 3.333867296 S17 Imaging Infinity 3.734065733 Plane

TABLE 46 K A B C D E F G H J S1 −0.9157 −0.0242 0.04834 −0.0925 0.038550.05774 −0.0925 0.05787 −0.0178 0.0022 S2 −12.376 0.06268 −0.1415−0.3392 0.89911 −0.7358 0.18342 0.07554 −0.0533 0.00878 S3 −0.83190.03105 −0.03 −0.6522 1.49233 −1.3976 0.63517 −0.1105 −0.0112 0.00479 S4−7.367 −0.1852 1.71789 −6.8471 14.8214 −19.261 15.4645 −7.5184 2.03069−0.2341 S5 12.337 −0.2536 1.74889 −6.6898 14.6458 −19.491 16.0712−8.0307 2.2327 −0.2657 S6 1.14541 −0.0901 0.21678 −0.6218 1.45024−2.2709 2.26343 −1.3948 0.48954 −0.0747 S7 −12.034 0.04238 −0.68382.52889 −5.5859 7.65595 −6.5535 3.38285 −0.9545 0.11242 S8 5.85918−0.0168 −0.1532 0.44792 −0.9325 1.23635 −1.0356 0.53063 −0.1517 0.01866S9 −43.521 0.01961 0.0447 −0.1445 0.17405 −0.1293 0.05892 −0.01640.00257 −0.0002 S10 −9.9703 −0.0233 −0.0527 0.08206 −0.0601 0.02462−0.0062 0.00098  −9E−05 3.5E−06 S11 −16.199 0.13832 −0.3024 0.30558−0.2185 0.10175 −0.0304 0.00571 −0.0006 2.9E−05 S12 0.01179 −0.09790.0662 −0.0617 0.03374 −0.0119 0.00278 −0.0004 3.3E−05  −1E−06 S13−0.8414 −0.3646 0.15334 −0.0353 0.00329 0.00039 −0.0001 1.6E−05  −8E−071.3E−08 S14 −1.4251 −0.2584 0.13506 −0.0538 0.01612 −0.0034 0.00047 −4E−05 1.9E−06  −4E−08

Twenty-Fourth Example

FIG. 47 is a view illustrating a twenty-fourth example of an opticalimaging system, and FIG. 48 illustrates aberration curves of the opticalimaging system of FIG. 47 .

The twenty-fourth example of the optical imaging system includes a firstlens 2410, a second lens 2420, a third lens 2430, a fourth lens 2440, afifth lens 2450, a sixth lens 2460, a seventh lens 2470, a filter 2480,an image sensor 2490, and a stop (not shown) disposed between the secondlens 2420 and the third lens 2430.

The first lens 2410 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 2420 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 2430 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 2440 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 2450 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 2460 has a negative refractive power, a paraxial regionof each of an object-side surface and an image-side surface thereof isconcave.

The seventh lens 2470 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

One inflection point is formed on the object-side surface of the seventhlens 2470. For example, the object-side surface of the seventh lens 2470is convex in the paraxial region, and becomes concave toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 2470. For example, the image-side surface of theseventh lens 2470 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 47 , the stop is disposed at a distanceof 0.963 mm from the object-side surface of the first lens 2410 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 24 listed in Table 55 that appears later in this application.

Table 47 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 47 , and Table 48 belowshows aspherical surface coefficients of the lenses of FIG. 47 . Bothsurfaces of all of the lenses of FIG. 47 are aspherical.

TABLE 47 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.749266485 0.7080384 1.546 56.114 1.280 S2 Lens 7.762717699 0.025 1.225S3 Second 3.688311274 0.23 1.667 20.353 1.160 S4 Lens 2.4524356050.355115 1.033 S5 Third 39.91400184 0.23 1.667 20.353 1.053 S6 Lens22.42331799 0.025 1.090 S7 Fourth 6.687663883 0.3582464 1.546 56.1141.130 S8 Lens 17.14258608 0.393231 1.201 S9 Fifth 10.0342824 0.35246381.656 21.525 1.329 S10 Lens 6.555482673 0.2520001 1.664 S11 Sixth−324.864371 0.6106713 1.656 21.525 1.841 S12 Lens 12.28603941 0.03422862.288 S13 Seventh 1.951834481 0.8257306 1.536 55.656 2.578 S14 Lens1.756651038 0.2187466 2.963 S15 Filter Infinity 0.21 1.518 64.197 3.258S16 Infinity 0.6499884 3.334462215 S17 Imaging Infinity 3.728830434Plane

TABLE 48 K A B C D E F G H J S1 −0.2398 5.3E−05 0.02249 −0.0553 0.07912−0.0725 0.04077 −0.0137 0.00194 0 S2 6.04243 −0.0363 0.03435 0.01444−0.1124 0.16667 −0.1307 0.05398 −0.0092 0 S3 −1.7137 −0.0472 0.040970.02639 −0.116 0.18951 −0.1701 0.08267 −0.0161 0 S4 −0.2358 −0.0167−0.01 0.05643 −0.0195 −0.1069 0.22786 −0.1897 0.06253 0 S5 −0.0716−0.0169 −0.0047 −0.1892 0.62952 −1.0256 0.96124 −0.4977 0.11269 0 S6−1.1573 0.01994 −0.1372 0.14441 −0.0555 0.14079 −0.2746 0.2067 −0.0539 0S7 −28.459 0.02126 −0.1017 0.06112 0.04565 0.01801 −0.1503 0.1307−0.0346 0 S8 −2.3038 −0.0386 0.03937 −0.1206 0.2443 −0.4112 0.47457−0.3301 0.12291 −0.0182 S9 −3.3254 −0.1025 0.04401 −0.1067 0.23796−0.3262 0.24087 −0.0929 0.01464 0 S10 −25.215 −0.0274 −0.1331 0.19086−0.1562 0.07712 −0.0231 0.00411 −0.0003 0 S11 23.2017 0.16789 −0.28820.24139 −0.1422 0.05329 −0.0119 0.00149  −8E−05 0 S12 −49.948 0.00684−0.0175 0.00273 0.0001 −0.0001 3.8E−05 −6E−06 3.8E−07 0 S13 −1.9292−0.2614 0.12601 −0.0405 0.00941 −0.0015 0.00015 −9E−06 2.2E−07 0 S14−0.8288 −0.1737 0.06522 −0.0206 0.00465 −0.0007 6.3E−05 −3E−06 6.6E−08 0

Twenty-Fifth Example

FIG. 49 is a view illustrating a twenty-fifth example of an opticalimaging system, and FIG. 50 illustrates aberration curves of the opticalimaging system of FIG. 49 .

The twenty-fifth example of the optical imaging system includes a firstlens 2510, a second lens 2520, a third lens 2530, a fourth lens 2540, afifth lens 2550, a sixth lens 2560, a seventh lens 2570, a filter 2580,an image sensor 2590, and a stop (not shown) disposed between the secondlens 2520 and the third lens 2530.

The first lens 2510 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 2520 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 2530 has a positive refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The fourth lens 2540 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 2550 has a positive refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The sixth lens 2560 has a positive refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The seventh lens 2570 has a negative refractive power, a paraxial regionof each of an object-side surface and an image-side surface thereof isconcave.

No inflection point is formed on the object-side surface of the seventhlens 2570.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 2570. For example, the image-side surface of theseventh lens 2570 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 49 , the stop is disposed at a distanceof 0.872 mm from the object-side surface of the first lens 2510 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 25 listed in Table 55 that appears later in this application.

Table 49 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 49 , and Table 50 belowshows aspherical surface coefficients of the lenses of FIG. 49 . Bothsurfaces of all of the lenses of FIG. 49 are aspherical.

TABLE 49 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.76028791 0.6171815 1.546 56.114 1.100 S2 Lens 14.12333348 0.025 1.040S3 Second 5.834118934 0.23 1.667 20.353 1.011 S4 Lens 3.1226714460.3733379 0.919 S5 Third −49.94173366 0.3798697 1.546 56.114 0.995 S6Lens −15.18699611 0.1809039 1.096 S7 Fourth 23.36800299 0.3031664 1.66720.353 1.124 S8 Lens 12.20982926 0.3354305 1.309 S9 Fifth −4.3947719820.4728905 1.546 56.114 1.471 S10 Lens −1.598299305 0.025 1.698 S11 Sixth−6.081499124 0.5446656 1.546 56.114 1.822 S12 Lens −3.0145335390.2724323 2.192 S13 Seventh −6.149442968 0.42237 1.546 56.114 2.462 S14Lens 1.636694252 0.1933361 2.880 S15 Filter Infinity 0.21 1.518 64.1973.223 S16 Infinity 0.6544156 3.300 S17 Imaging Infinity 3.728 Plane

TABLE 50 K A B C D E F G H J S1 −1.0054 0.02246 0.02216 −0.0696 0.16036−0.2238 0.18065 −0.0791 0.01412 0 S2 −1.5097 −0.1275 0.3975 −0.69820.68012 −0.322 0.02875 0.02904 −0.0076 0 S3 6.02943 −0.163 0.45041−0.8514 1.05249 −0.8203 0.42351 −0.138 0.0213 0 S4 −0.8846 −0.04490.03929 0.15739 −0.6934 1.31707 −1.3069 0.67995 −0.143 0 S5 0 −0.0513−0.0193 −0.016 0.00429 0.00341 −0.0155 0.03192 −0.0128 0 S6 0 −0.1089−0.0569 0.35761 −0.9255 1.19468 −0.8604 0.33221 −0.0547 0 S7 −7.5−0.2139 −0.0107 0.17878 −0.1827 −0.1159 0.3046 −0.1897 0.04049 0 S8−43.341 −0.1402 −0.061 0.2777 −0.4123 0.3523 −0.1857 0.05641 −0.0071 0S9 −35.081 −0.0602 0.07357 −0.1046 0.10843 −0.0726 0.02553 −0.00410.00022 0 S10 −1.5734 0.16205 −0.2197 0.18955 −0.107 0.03959 −0.00910.00113 −6E−05 0 S11 0.51533 0.21373 −0.3167 0.23989 −0.1217 0.03837−0.0069 0.00066 −3E−05 0 S12 −1.1466 0.19671 −0.2565 0.15417 −0.05320.01146 −0.0015 0.00012 −4E−06 0 S13 −0.9056 −0.0077 −0.2094 0.18829−0.0749 0.01671 −0.0022 0.00015 −5E−06 0 S14 −1.2797 −0.2192 0.10065−0.0338 0.00878 −0.0018 0.00026 −2E−05 1.3E−06  −3E−08

Twenty-Sixth Example

FIG. 51 is a view illustrating a twenty-sixth example of an opticalimaging system, and FIG. 52 illustrates aberration curves of the opticalimaging system of FIG. 51 .

The twenty-sixth example of the optical imaging system includes a firstlens 2610, a second lens 2620, a third lens 2630, a fourth lens 2640, afifth lens 2650, a sixth lens 2660, a seventh lens 2670, a filter 2680,an image sensor 2690, and a stop (not shown) disposed between the secondlens 2620 and the third lens 2630.

The first lens 2610 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 2620 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 2630 has a positive refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The fourth lens 2640 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 2650 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 2660 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 2670 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

Two inflection points are formed on the object-side surface of theseventh lens 2670. For example, the object-side surface of the seventhlens 2670 is convex in the paraxial region, becomes concave in a regionoutside the paraxial region, and becomes convex toward an edge thereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 2670. For example, the image-side surface of theseventh lens 2670 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 51 , the stop is disposed at a distanceof 0.866 mm from the object-side surface of the first lens 2610 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 26 listed in Table 55 that appears later in this application.

Table 51 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 51 , and Table 52 belowshows aspherical surface coefficients of the lenses of FIG. 51 . Bothsurfaces of all of the lenses of FIG. 51 are aspherical.

TABLE 51 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.882954913 0.5871918 1.546 56.114 1.050 S2 Lens 18.07331507 0.04919760.962 S3 Second 4.599463678 0.23 1.667 20.353 0.934 S4 Lens 2.5463774740.3929389 0.837 S5 Third −21.75460448 0.2744632 1.546 56.114 1.100 S6Lens −13.51443301 0.0611157 1.106 S7 Fourth 25.33486158 0.2655293 1.54656.114 1.200 S8 Lens 25.33602848 0.3710469 1.285 S9 Fifth 9.4681880480.3930453 1.656 21.525 1.500 S10 Lens 5.10288098 0.3790363 1.754 S11Sixth 6.416223875 0.888499 1.546 56.114 2.041 S12 Lens 6.3520620010.0460253 2.631 S13 Seventh 1.966539749 0.8854198 1.536 55.656 3.050 S14Lens 1.769884599 0.3097825 3.456 S15 Filter Infinity 0.21 1.518 64.1973.768 S16 Infinity 0.65 3.829 S17 Imaging Infinity 4.129 Plane

TABLE 52 K A B C D E F G H J S1 −0.1525 0.00346 0.00541 −0.0238 0.05874−0.0925 0.08078 −0.0376 0.00687 0 S2 −36.188 −0.0554 0.19103 −0.49540.90918 −1.1194 0.84898 −0.3546 0.06168 0 S3 −0.1164 −0.0883 0.22642−0.5273 0.9947 −1.274 1.01042 −0.4343 0.07596 0 S4 0.3326 −0.04620.09702 −0.2316 0.5455 −0.848 0.78539 −0.3759 0.07082 0 S5 51.7577−0.0119 −0.0911 0.36173 −0.9067 1.38454 −1.3014 0.68351 −0.1493 0 S642.1637 0.0924 −0.5269 1.35579 −2.2584 2.50931 −1.8107 0.76109 −0.139 0S7 −4.7579 0.13357 −0.5938 1.26101 −1.8115 1.7924 −1.1666 0.44267−0.0728 0 S8 −3.4393 0.04714 −0.1842 0.28859 −0.3575 0.32734 −0.19710.06695 −0.0093 0 S9 −8.5449 −0.0502 −0.0588 0.15989 −0.2027 0.13981−0.0542 0.01046 −0.0007 0 S10 −18.064 −0.044 −0.0734 0.14254 −0.13030.06906 −0.0217 0.00378 −0.0003 0 S11 −4.6497 0.06328 −0.1193 0.08822−0.0426 0.01348 −0.0028 0.00037 −2E−05 0 S12 −50 0.03403 −0.0497 0.02457−0.0072 0.00126 −0.0001 6.9E−06 −2E−07 0 S13 −2.4291 −0.1201 0.016670.00224 −0.0009 0.00011 −6E−06 1.3E−07 8.8E−10  0 S14 −1.0032 −0.11110.02485 −0.0032 −0.0001 0.00013 −2E−05 1.9E−06 −8E−08 1.4E−09

Twenty-Seventh Example

FIG. 53 is a view illustrating a twenty-seventh example of an opticalimaging system, and FIG. 54 illustrates aberration curves of the opticalimaging system of FIG. 53 .

The twenty-seventh example of the optical imaging system includes afirst lens 2710, a second lens 2720, a third lens 2730, a fourth lens2740, a fifth lens 2750, a sixth lens 2760, a seventh lens 2770, afilter 2780, an image sensor 2790, and a stop (not shown) disposedbetween the second lens 2720 and the third lens 2730.

The first lens 2710 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 2720 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 2730 has a positive refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The fourth lens 2740 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 2750 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 2760 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 2770 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

Two inflection points are formed on the object-side surface of theseventh lens 2770. For example, the object-side surface of the seventhlens 2770 is convex in the paraxial region, becomes concave in a regionoutside the paraxial region, and becomes convex toward an edge thereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 2770. For example, the image-side surface of theseventh lens 2770 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 53 , the stop is disposed at a distanceof 0.904 mm from the object-side surface of the first lens 2710 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 27 listed in Table 55 that appears later in this application.

Table 53 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 53 , and Table 54 belowshows aspherical surface coefficients of the lenses of FIG. 53 . Bothsurfaces of all of the lenses of FIG. 53 are aspherical.

TABLE 53 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.898698558 0.6486367 1.546 56.114 1.260 S2 Lens 7.35678597 0.025 1.216S3 Second 3.87893073 0.23 1.667 20.353 1.161 S4 Lens 2.7620088910.3408168 1.053 S5 Third −50.1241934 0.2818618 1.546 56.114 1.120 S6Lens −14.98893663 0.0597334 1.158 S7 Fourth 12.04981408 0.269789 1.54656.114 1.220 S8 Lens 12.56574443 0.2918619 1.320 S9 Fifth 9.5925759830.35 1.667 20.353 1.520 S10 Lens 5.27478585 0.3343756 1.762 S11 Sixth6.87350249 0.8484117 1.546 56.114 2.052 S12 Lens 7.493319886 0.05911052.641 S13 Seventh 2.033708385 0.8835732 1.536 55.656 3.070 S14 Lens1.843638917 0.3047846 3.425 S15 Filter Infinity 0.21 1.518 64.197 3.764S16 Infinity 0.6591161 3.825 S17 Imaging Infinity 4.134 Plane

TABLE 54 K A B C D E F G H J S1 −0.1061 −0.0082 0.0469 −0.0925 0.08107−0.0129 −0.032 0.02237 −0.0047 0 S2 −36.188 −0.0502 0.16245 −0.40290.69307 −0.7643 0.50209 −0.1789 0.02641 0 S3 0.0036 −0.0795 0.20571−0.548 1.07416 −1.291 0.90975 −0.3412 0.05201 0 S4 0.40382 −0.03250.08844 −0.3009 0.70037 −0.9194 0.67381 −0.2424 0.03077 0 S5 51.75770.00548 −0.1746 0.50176 −0.9395 1.14417 −0.9144 0.4407 −0.0937 0 S642.1637 0.09529 −0.4992 1.03966 −1.2284 0.81694 −0.2802 0.03842  4E−06 0S7 −4.7579 0.1185 −0.4938 0.85535 −0.8643 0.51674 −0.185 0.04168 −0.00540 S8 −3.4393 0.04916 −0.194 0.31472 −0.3773 0.32494 −0.1878 0.06297−0.0088 0 S9 −8.5449 −0.0638 0.02895 −0.0884 0.16492 −0.171 0.09832−0.0306 0.00409 0 S10 −18.064 −0.0543 −0.0172 0.03209 −0.0179 0.003974.6E−06 −0.0001 7.7E−06  0 S11 −4.6497 0.05354 −0.0909 0.06134 −0.03110.01102 −0.0026 0.00036 −2E−05 0 S12 −50 0.01031 −0.0176 0.00573 −0.00150.0003  −4E−05 2.4E−06 −6E−08 0 S13 −2.606 −0.1177 0.01922 −0.0004−1E−04  −1E−05 4.5E−06  −4E−07 9.4E−09  0 S14 −1.0102 −0.0979 0.01866−0.0024 0.00013 2.1E−05  −6E−06 5.9E−07 −3E−08 5.6E−10

Table 55 below shows an overall focal length f of the optical imagingsystem, an overall length TTL of the optical imaging system (a distancealong the optical axis from the object-side surface of the first lens tothe imaging plane), a distance SL along the optical axis from the stopto the imaging plane, an f-number (F No.) of the optical imaging system(the overall focal length f of the optical imaging system divided by thediameter of an entrance pupil of the optical imaging system, where bothf and the diameter of the entrance pupil are expressed in mm), an imageheight (IMG HT) on the imaging plane (one-half of a diagonal length ofthe imaging plane), and a field of view (FOV) of the optical imagingsystem for each of 1-27 described herein. The values of f, TTL, SL, andIMG HT are expressed in mm. The values of F No. are dimensionlessvalues. The values of FOV are expressed in degrees.

TABLE 55 Example f TTL SL F No. IMG HT FOV 1 3.685 4.200 3.543 2.043.261 81.60 2 4.848 6.000 5.097 1.54 4.000 77.80 3 4.315 5.290 4.4721.56 3.552 77.30 4 3.970 4.812 3.652 1.59 3.400 79.54 5 3.950 4.8193.650 1.58 3.250 77.47 6 4.350 5.300 4.917 1.58 3.384 79.58 7 4.3005.200 4.849 1.58 3.700 80.13 8 4.020 4.901 4.565 1.58 3.400 79.28 94.280 5.100 4.369 1.71 3.535 77.84 10 4.423 5.500 4.810 1.73 3.535 76.1411 4.381 5.500 4.774 1.65 3.535 76.54 12 4.401 5.300 4.142 1.69 3.72879.31 13 4.536 5.499 4.300 1.69 3.728 77.56 14 4.544 5.500 4.423 1.673.728 77.54 15 4.751 5.637 4.544 1.64 3.528 72.12 16 4.105 4.900 3.9811.87 3.261 75.03 17 4.447 5.144 4.894 2.07 3.528 75.63 18 4.700 5.6504.882 1.81 3.928 78.82 19 4.400 5.200 4.576 1.81 3.261 72.55 20 3.9945.125 4.484 1.57 3.261 77.38 21 3.900 4.720 3.650 1.77 3.261 78.69 223.750 4.560 3.510 1.68 3.261 80.29 23 4.451 5.703 4.621 1.63 3.728 78.6024 4.592 5.478 4.515 1.79 3.728 76.90 25 4.302 5.240 4.368 1.95 3.72880.46 26 4.966 5.993 5.127 2.36 4.128 78.45 27 4.667 5.797 4.893 1.854.128 81.80

Table 56 below shows in mm a focal length f1 of the first lens, a focallength f2 of the second lens, a focal length f3 of the third lens, afocal length f4 of the fourth lens, a focal length f5 of the fifth lens,a focal length f6 of the sixth lens, and a focal length f7 of theseventh lens for each of 1-27 described herein.

TABLE 56 Example f1 f2 f3 f4 f5 f6 f7 1 3.293 −8.705 14.115 90.636−15.266 40.265 −15.456 2 4.699 −11.772 21.070 −38.885 −12.922 2.771−2.453 3 4.057 −11.047 44.073 −31.550 −17.744 2.228 −2.041 4 8.888 4.209−6.477 16272754.8 517.877 −28.106 1852.192 5 8.409 4.355 −6.520−4512.292 74.369 −22.452 1842.731 6 −64.233 3.248 −7.428 −43.722 52.4253.010 −2.424 7 −41.858 3.128 −7.376 −103.801 64.750 2.915 −2.286 8−38.662 2.911 −6.813 −43.728 59.023 2.640 −2.116 9 3.596 −7.349−1245.238 15.657 −19.723 2.662 −2.171 10 3.671 −7.598 −10000 13.978−15.153 2.617 −2.173 11 3.715 −7.660 −10000 15.301 −16.799 2.406 −2.03412 9.952 4.985 −9.042 −60.959 28.461 −19.130 −36.205 13 9.489 5.133−8.027 113.261 53.479 −17.195 −112.366 14 13.419 5.627 −8.921 16.142−36.758 29.873 −12.281 15 4.273 −8.936 14.514 30.320 −17.493 61.723−10.997 16 3.663 −6.575 13.173 72.886 −140.959 42.434 −9.509 17 3.626−6.978 10.551 125.381 −28.155 −367.720 −9.031 18 4.553 −11.109 33.93236.853 268.352 4.100 −2.623 19 4.290 −10.606 30.978 14.871 −21.133 3.784−2.465 20 5.677 −73.551 −122.716 15.510 207.375 3.799 −2.466 21 3.720−9.340 −800 14.620 −100 −674 −18.040 22 3.740 −9.750 −800 14.290 −99.5−800 −19.010 23 18.149 4.970 −8.433 25.591 −19.167 25.748 69.101 243.971 −11.857 −77.132 19.846 −30.042 −18.041 68.790 25 3.620 −10.42839.821 −38.762 4.342 10.303 −2.323 26 3.802 −8.955 64.595 12384.769−17.503 299.093 57.797 27 4.499 −15.674 39.058 453.779 −18.160 102.61259.134

Table 57 below shows in mm a thickness (DedgeT) of an edge of the firstlens, a thickness (L2edgeT) of the edge of the second lens, a thickness(L3edgeT) of the edge of the third lens, a thickness (L4edgeT) of theedge of the fourth lens, a thickness (L5edgeT) of the edge of the fifthlens, a thickness (L6edgeT) of the edge of the sixth lens, and athickness (L7edgeT) of the edge of the seventh lens for each of 1-27described herein.

TABLE 57 Example L1edgeT L2edgeT L3edgeT L4edgeT L5edgeT L6edgeT L7edgeT1 0.202 0.208 0.199 0.197 0.238 0.204 0.351 2 0.253 0.354 0.255 0.3480.284 0.256 0.831 3 0.226 0.305 0.232 0.280 0.261 0.225 0.618 4 0.2320.262 0.334 0.193 0.270 0.288 0.298 5 0.233 0.259 0.333 0.203 0.2720.330 0.376 6 0.220 0.270 0.348 0.224 0.259 0.269 0.437 7 0.200 0.2680.356 0.220 0.240 0.240 0.353 8 0.194 0.250 0.328 0.211 0.239 0.2220.388 9 0.222 0.377 0.235 0.240 0.189 0.260 0.323 10 0.181 0.365 0.2010.239 0.393 0.361 0.817 11 0.179 0.345 0.206 0.257 0.415 0.262 0.950 120.257 0.255 0.340 0.276 0.365 0.307 0.278 13 0.280 0.247 0.375 0.3210.375 0.279 0.517 14 0.250 0.250 0.440 0.270 0.318 0.652 0.294 15 0.2230.354 0.233 0.210 0.386 0.654 0.695 16 0.225 0.368 0.245 0.232 0.2000.615 0.447 17 0.269 0.308 0.190 0.230 0.410 0.714 0.300 18 0.323 0.4180.258 0.328 0.292 0.401 0.493 19 0.205 0.407 0.201 0.333 0.278 0.3480.815 20 0.218 0.347 0.211 0.259 0.277 0.251 0.950 21 0.100 0.280 0.1000.410 0.170 0.410 0.580 22 0.110 0.290 0.100 0.330 0.140 0.420 0.620 230.248 0.303 0.393 0.456 0.352 0.835 0.513 24 0.250 0.275 0.277 0.2500.337 0.479 0.782 25 0.252 0.293 0.238 0.374 0.258 0.415 0.686 26 0.2930.298 0.252 0.251 0.409 0.715 0.678 27 0.246 0.280 0.254 0.273 0.3560.630 0.692

Table 58 below shows in mm a sag value (L5S1 sag) at an outer end of theoptical portion of the object-side surface of the fifth lens, a sagvalue (L5S2 sag) at an outer end of the optical portion of theimage-side surface of the fifth lens, a thickness (Yc71P1) of theseventh lens at a first inflection point on the object-side surface ofthe seventh lens, a thickness (Yc71P2) of the seventh lens at a secondinflection point on the object-side surface of the seventh lens, and athickness (Yc72P1) of the seventh lens at a first inflection point onthe image-side surface of the seventh lens for each of 1-27 describedherein.

TABLE 58 Example L5S1 sag L5S2 sag Yc71P1 Yc71P2 Yc72P1 1 −0.405 −0.3450.528 0.455 0.629 2 −0.464 −0.496 1.31 — 0.99 3 −0.315 −0.357 1.089 —0.901 4 0.201 0.235 0.554 0.655 0.9 5 0.200 0.202 0.568 0.67  0.667 60.115 0.139 0.93 — 0.811 7 0.148 0.172 0.88 — 0.795 8 0.123 0.129 0.859— 0.769 9 −0.466 −0.526 2.933 — 4.142 10 −0.421 −0.473 3.25 — 4.55 11−0.422 −0.453 3.319 — 4.481 12 0.210 0.245 0.569 0.641 0.67 13 0.2100.185 0.647 0.751 0.771 14 0.185 0.267 0.527 0.485 0.647 15 −0.415−0.431 0.604 0.886 0.818 16 −0.340 −0.437 0.658 0.747 0.81 17 −0.261−0.263 0.473 — 0.631 18 −0.499 −0.478 0.806 — 0.771 19 −0.485 −0.4070.89 — 0.92 20 −0.479 −0.422 — — 0.781 21 −0.440 −0.430 0.72 — 0.12 22−0.380 −0.430 0.72 — 0.12 23 0.210 0.372 0.61 0.706 0.722 24 0.270 0.2860.889 — 1.015 25 0.276 0.509 — — 0.968 26 0.092 0.103 0.955 1.103 1.12827 0.179 0.173 0.964 1.114 1.13

Table 59 below shows in mm an inner diameter of each of the first toseventh spacers for each of 1-27 described herein. S1d is an innerdiameter of the first spacer SP1, S2d is an inner diameter of the secondspacer SP2, S3d is an inner diameter of the third spacer SP3, S4d is aninner diameter of the fourth spacer SP4, S5d is an inner diameter of thefifth spacer SP5, S6d is an inner diameter of the sixth spacer SP6, andS7d is an inner diameter of the seventh spacer SP7.

TABLE 59 Example S1d S2d S3d S4d S5d S6d S7d 1 1.69 1.51 1.64 2.09 2.954.49 — 2 2.84 2.53 2.83 3.29 4.34 6.31 — 3 2.52 2.2 2.47 2.93 3.64 5.33— 4 1.33 1.26 0.96 1.44 1.94 2.6 — 5 1.24 1.15 1.03 1.48 1.9 2.46 — 61.34 1.23 1.03 1.5 1.98 2.66 — 7 1.33 1.23 1.04 1.58 2.1 2.75 — 8 1.251.14 0.94 1.5 1.86 2.44 — 9 2.31 2.16 2.54 2.94 4.06 4.84 5.12 10 2.482.26 2.56 2.84 3.76 4.78 5.2  11 2.48 2.23 2.56 2.86 3.69 4.58 5.07 122.58 2.4 2.49 2.97 4.16 4.89 5.51 13 2.55 2.4 2.49 2.97 4.02 4.89 5.6314 2.65 2.46 2.39 2.9 3.8 5.15 — 15 2.706 2.468 2.446 2.616 3.308 5.582— 16 2.176 2.058 2.122 2.39 2.808 4.792 — 17 2.12 2.1 2.04 2.12 2.814.64 — 18 2.43 2.48 2.89 3.38 4.57 6.18 — 19 2.32 2.36 2.56 2.93 3.74.35 — 20 2.41 2.3 2.66 3.03 3.76 — — 21 2.06 1.784 2.136 2.632 2.9564.366 — 22 2.076 1.784 2.078 2.59 2.85 4.128 — 23 2.68 2.51 2.54 3 3.965.28 — 24 2.39 2.09 2.24 2.65 3.62 4.78 5.08 25 2.06 1.89 2.15 2.7 3.614.56 4.84 26 1.89 1.84 2.33 2.73 3.73 5.43 6.03 27 2.39 2.15 2.4 2.823.94 5.68 6.02

Table 60 below shows in mm³ a volume of each of the first to seventhlenses for each of 1-27 described herein. L1v is a volume of the firstlens, L2v is a volume of the second lens, L3v is a volume of the thirdlens, L4v is a volume of the fourth lens, L5v is a volume of the fifthlens, L6v is a volume of the sixth lens, and L7v is a volume of theseventh lens.

TABLE 60 Example L1v L2v L3v L4v L5v L6v L7v 1 2.2524 2.0618 2.27672.9806 5.367 7.9203 15.204 2 9.4074 6.0389 7.8806 9.9733 14.2491 18.721748.3733 3 6.1771 4.5153 5.2418 5.8649 8.7918 11.0804 30.7452 4 4.91835.6902 6.3612 5.0504 8.147 10.2679 16.4786 5 6.3442 6.9494 7.7597 6.20766.8959 10.3364 16.5597 6 5.7249 8.0179 8.3774 7.9589 10.3434 11.103127.1511 7 7.0609 8.2183 8.3812 8.577 10.4368 10.0819 25.7323 8 5.07995.7347 5.8704 6.465 6.7471 7.523 21.0455 9 5.2342 5.0595 5.1455 4.14025.9856 8.1378 19.6812 10 4.6012 5.0554 4.4232 3.7935 9.9974 13.342931.7191 11 4.8917 4.777 4.399 3.8155 10.2897 11.3167 33.3467 12 5.6394.858 6.6748 7.1627 11.0369 11.9357 27.1217 13 5.8304 4.8865 6.51287.1688 10.887 16.2551 26.8011 14 5.165 5.3015 6.2461 7.0472 12.250319.1335 17.9152 15 6.5129 6.0017 5.9544 6.0281 13.8948 30.2962 31.114716 3.8214 4.3362 4.4869 5.6551 6.8114 19.8745 20.3749 17 3.8115 4.67144.0552 5.0631 11.2844 25.7618 16.5646 18 6.2758 6.5315 7.7526 9.564212.5716 16.0772 29.9737 19 4.2347 5.5368 5.5931 7.5471 9.4202 8.999227.3258 20 4.6529 4.6572 6.2312 6.7131 10.2673 11.7401 33.5372 21 2.77323.7423 2.4001 9.3009 4.1785 16.1001 22.2706 22 2.9525 3.7672 1.99897.5203 3.1364 16.7166 21.7591 23 5.1107 5.8654 6.3124 10.0933 12.27329.3788 26.3671 24 5.1465 4.5089 4.4695 4.8122 8.9386 18.2117 35.9358 253.81 3.9751 3.9272 6.1885 7.516 13.0347 31.8586 26 4.7517 4.3655 6.45625.0723 9.8674 36.8705 47.4701 27 5.6273 4.949 5.1423 5.0791 9.362431.5832 47.9081

Table 61 below shows in mg a weight of each of the first to seventhlenses for each of 1-27 described herein. L1w is a weight of the firstlens, L2w is a weight of the second lens, L3w is a weight of the thirdlens, L4w is a weight of the fourth lens, L5w is a weight of the fifthlens, L6w is a weight of the sixth lens, and L7w is a weight of theseventh lens.

TABLE 61 Example L1w L2w L3w L4w L5w L6w L7w 1 2.342 2.536 2.368 3.1006.709 9.900 15.356 2 9.784 7.428 8.196 12.267 17.811 19.471 50.308 36.424 5.554 5.451 7.214 10.990 11.524 31.975 4 5.115 5.918 7.952 6.3138.473 12.835 16.643 5 6.598 7.227 9.700 7.760 7.172 12.921 16.725 65.954 8.339 10.472 9.710 12.619 11.547 28.237 7 7.343 8.547 10.47710.464 12.733 10.485 26.762 8 5.283 5.964 7.338 7.887 8.231 7.824 21.8879 5.444 6.223 5.351 4.306 7.362 8.463 20.468 10 4.785 6.218 4.600 3.94512.297 13.877 32.988 11 5.087 5.876 4.575 3.968 12.656 11.769 34.681 125.865 5.052 8.344 8.953 11.478 14.920 27.393 13 6.064 5.082 8.141 7.45611.322 20.319 27.873 14 5.372 5.514 7.808 7.329 15.313 19.899 18.632 156.773 7.382 7.324 6.269 17.230 37.567 31.426 16 3.974 5.334 5.519 5.8818.446 24.644 20.579 17 3.964 5.746 4.217 5.266 14.106 26.792 17.227 186.527 8.034 8.063 9.947 15.463 16.720 31.173 19 4.404 6.810 5.817 7.84911.587 9.359 28.419 20 4.839 5.728 6.480 6.982 12.629 12.210 34.879 212.884 4.603 2.952 9.673 5.223 20.125 22.493 22 3.071 4.634 2.459 7.8213.921 20.896 21.977 23 5.315 6.100 7.891 10.497 12.764 30.554 27.422 245.352 5.546 5.497 5.005 11.173 22.765 36.295 25 3.962 4.889 4.084 7.6127.817 13.556 33.133 26 4.942 5.370 6.714 5.275 12.334 38.345 47.945 275.852 6.087 5.348 5.282 11.516 32.847 48.387

Table 62 below shows in mm an overall outer diameter (including a rib)of each of the first to seventh lenses for each of 1-27 describedherein. L1TR is an overall outer diameter of the first lens, L2TR is anoverall outer diameter of the second lens, L3TR is an overall outerdiameter of the third lens, L4TR is an overall outer diameter of thefourth lens, LSTR is an overall outer diameter of the fifth lens, L6TRis an overall outer diameter of the sixth lens, and L7TR is an overallouter diameter of the seventh lens.

TABLE 62 Example L1TR L2TR L3TR L4TR L5TR L6TR L7TR 1 3.34 3.54 3.844.14 4.82 5.72 5.92 2 4.93 5.13 5.63 6.23 7.2 7.6 7.8 3 4.22 4.42 4.725.52 6.24 6.64 6.84 4 3.13 3 2.75 2.49 2.37 2.23 2.15 5 2.29 2.4 2.542.63 2.78 2.91 3.04 6 2.46 2.58 2.69 2.8 3.17 3.31 3.47 7 2.48 2.61 2.722.82 3.19 3.34 3.5 8 2.19 2.32 2.44 2.57 2.74 3 3.11 9 4.22 4.42 4.544.72 5.4 5.74 6.3 10 4.2 4.35 4.49 4.65 5.5 5.84 6.63 11 4.14 4.28 4.424.58 5.45 5.79 6.58 12 4.21 4.3 4.44 4.84 5.47 6.12 6.9 13 4.21 4.3 4.444.84 5.47 6.12 6.9 14 4.19 4.28 4.41 4.81 5.51 6.16 6.52 15 4.502 4.695.164 5.752 6.608 6.996 7.182 16 3.836 3.974 4.536 5.176 6.33 6.4586.558 17 3.51 3.81 4.39 4.98 5.85 6.15 6.25 18 4.27 4.46 5.04 5.63 6.56.9 7.1 19 3.93 4.13 4.71 6.17 5.3 6.57 6.67 20 4.03 4.23 4.81 5.4 6.276.67 6.77 21 3.802 4.012 4.126 4.902 5.646 6.086 6.422 22 3.8 3.99 4.0684.816 5.514 5.92 6.246 23 4.26 4.35 4.49 4.89 5.52 6.75 7.26 24 4.1 4.194.32 4.72 5.35 6.17 7.03 25 3.73 3.82 3.96 4.39 4.96 6 6.86 26 3.97 4.064.19 4.63 5.2 7.15 8.02 27 4.39 4.48 4.61 5.04 5.61 7.09 7.95

Table 63 below shows in mm a maximum thickness of the rib of each of thefirst to seventh lenses for each of 1-27 described herein. The maximumthickness of the rib is a thickness of a portion of the rib in contactwith a spacer. L1rt is a maximum thickness of the rib of the first lens,L2rt is a maximum thickness of the rib of the second lens, L3rt is amaximum thickness of the rib of the third lens, L4rt is a maximumthickness of the rib of the fourth lens, L5rt is a maximum thickness ofthe rib of the fifth lens, L6rt is a maximum thickness of the rib of thesixth lens, and L7rt is a maximum thickness of the rib of the seventhlens.

TABLE 63 Example L1rt L2rt L3rt L4rt L5rt L6rt L7rt 1 0.245 0.26 0.250.235 0.285 0.265 0.44 2 0.58 0.38 0.33 0.3 0.39 0.475 0.92 3 0.4850.375 0.31 0.21 0.295 0.335 0.685 4 0.51 0.46 0.48 0.27 0.4 0.32 0.36 50.54 0.5 0.52 0.42 0.21 0.39 0.4 6 0.39 0.44 0.47 0.36 0.42 0.38 0.47 70.59 0.44 0.47 0.35 0.38 0.3 0.39 8 0.54 0.37 0.41 0.33 0.37 0.27 0.42 90.435 0.43 0.36 0.215 0.32 0.33 0.405 10 0.38 0.46 0.35 0.18 0.51 0.470.85 11 0.41 0.45 0.34 0.18 0.45 0.37 1.01 12 0.55 0.38 0.58 0.41 0.50.32 0.53 13 0.56 0.38 0.56 0.41 0.5 0.32 0.54 14 0.52 0.42 0.52 0.410.61 0.7 0.37 15 0.482 0.492 0.369 0.196 0.427 0.615 0.737 16 0.4220.482 0.258 0.282 0.269 0.558 0.489 17 0.482 0.395 0.316 0.328 0.4220.885 0.409 18 0.508 0.554 0.444 0.473 0.41 0.438 0.522 19 0.431 0.5560.361 0.429 0.38 0.38 0.667 20 0.431 0.457 0.361 0.364 0.38 0.334 0.72921 0.35 0.423 0.276 0.46 0.172 0.525 0.641 22 0.366 0.392 0.239 0.3830.137 0.605 0.655 23 0.5 0.41 0.51 0.54 0.52 0.97 0.55 24 0.46 0.4 0.390.26 0.43 0.54 0.83 25 0.4 0.42 0.37 0.5 0.32 0.46 0.72 26 0.47 0.410.45 0.41 0.47 0.93 0.7 27 0.44 0.39 0.4 0.4 0.38 0.74 0.72

FIG. 58 is a cross-sectional view illustrating an example of a seventhlens.

FIG. 58 illustrates the overall outer diameter (L7TR) of the seventhlens, the thickness (L7rt) of the flat portion of the rib of the seventhlens, the thickness (L7edgeT) of the edge of the seventh lens, thethickness (Yc71P1) of the seventh lens at the first inflection point onthe object-side surface of the seventh lens, the thickness (Yc71P2) ofthe seventh lens at the second inflection point on the object-sidesurface of the seventh lens, and the thickness (Yc72P1) of the seventhlens at the first inflection point on the image-side surface of theseventh lens.

The examples described above enable the optical imaging system to beminiaturized and aberrations to be easily corrected to achieve highresolution.

While this disclosure includes specific examples, it will be apparentafter an understanding of the disclosure of this application thatvarious changes in form and details may be made in these exampleswithout departing from the spirit and scope of the claims and theirequivalents. The examples described herein are to be considered in adescriptive sense only, and not for purposes of limitation. Descriptionsof features or aspects in each example are to be considered as beingapplicable to similar features or aspects in other examples. Suitableresults may be achieved if the described techniques are performed in adifferent order, and/or if components in a described system,architecture, device, or circuit are combined in a different manner,and/or replaced or supplemented by other components or theirequivalents. Therefore, the scope of the disclosure is defined not bythe detailed description, but by the claims and their equivalents, andall variations within the scope of the claims and their equivalents areto be construed as being included in the disclosure.

What is claimed is:
 1. An optical imaging system comprising: a firstlens having positive refractive power, a convex object-side surface, anda concave image-side surface; a second lens having negative refractivepower, a convex object-side surface, and a concave image-side surface; athird lens having positive refractive power; a fourth lens havingnegative refractive power, a convex object-side surface, and a concaveimage-side surface; a fifth lens having refractive power; a sixth lenshaving refractive power; and a seventh lens having refractive power,wherein the first to seventh lenses are sequentially disposed innumerical order along an optical axis of the optical imaging system froman object side of the optical imaging system toward an imaging plane ofthe optical imaging system, wherein the optical imaging system has atotal of seven lenses, and wherein the optical imaging system satisfies0.6<TTL/(2*Img HT)<0.9, where TTL is a distance along the optical axisfrom the object-side surface of the first lens to the imaging plane ofthe image sensor, and Img HT is one-half of a diagonal length of theimaging plane of the image sensor.
 2. The optical imaging system ofclaim 1, wherein the optical imaging system satisfies 0.01<R1/R4<1.3,where R1 is a radius of curvature of the object-side surface of thefirst lens, and R4 is a radius of curvature of the image-side surface ofthe second lens.
 3. The optical imaging system of claim 2, wherein theseventh lens has a concave image-side surface, and the optical imagingsystem satisfies 0.6<(R11+R14)/(2*R1)<3.0, where R11 is a radius ofcurvature of an object-side surface of the sixth lens, and R14 is aradius of curvature of the image-side surface of the seventh lens. 4.The optical imaging system of claim 1, wherein the optical imagingsystem further satisfies 0.1<(1/f1+1/f2+1/f3+1/f4+1/f5+1/f6+1/f7)*f<0.8,where f1 is a focal length of the first lens, f2 is a focal length ofthe second lens, f3 is a focal length of the third lens, f4 is a focallength of the fourth lens, f5 is a focal length of the fifth lens, f6 isa focal length of the sixth lens, f7 is a focal length of the seventhlens, and f is an overall focal length of the optical imaging system. 5.The optical imaging system of claim 4, wherein the optical imagingsystem further satisfies0.1<(1/f1+1/f2+1/f3+1/f4+1/f5+1/f6+1/f7)*TTL<1.0.
 6. The optical imagingsystem of claim 1, wherein the optical imaging system further satisfies0.2<TD1/D67<0.8, where TD1 is a thickness along the optical axis of thefirst lens, and D67 is a distance along the optical axis from theobject-side surface of the sixth lens to an image-side surface of theseventh lens.
 7. The optical imaging system of claim 1, wherein theoptical imaging system satisfies SD12<SD34, wherein SD12 is a distancealong an optical axis from the image-side surface of the first lens tothe object-side surface of the second lens, and SD34 is a distance alongthe optical axis from an image-side surface of the third lens to anobject-side surface of the fourth lens.
 8. The optical imaging system ofclaim 7, wherein the optical imaging system satisfies SD56<SD34, whereinSD56 is a distance along an optical axis from an image-side surface ofthe fifth lens to an object-side surface of the sixth lens.
 9. Theoptical imaging system of claim 8, wherein the optical imaging systemsatisfies SD56<SD67, wherein SD67 is a distance along the optical axisfrom an image-side surface of the sixth lens to an object-side surfaceof the seventh lens.
 10. The optical imaging system of claim 1, whereinthe optical imaging system further satisfies 0.4<ΣTD/TTL<0.7, where ΣTDis a sum of thicknesses along the optical axis of the first to seventhlenses.
 11. The optical imaging system of claim 1, wherein the opticalimaging system further satisfies 0.2<ΣSD/ΣTD<0.7, where ΣSD is a sum ofair gaps along the optical axis between the first to seventh lenses andΣTD is a sum of thicknesses along the optical axis of the first toseventh lenses.
 12. The optical imaging system of claim 1, wherein sixthlens has positive refractive power, and the seventh lens has negativerefractive power.
 13. The optical imaging system of claim 12, whereinthe sixth lens has a convex object-side surface and the seventh lens hasa concave image-side surface.
 14. The optical imaging system of claim 1,wherein the third lens has a concave object-side surface and a conveximage-side surface.
 15. The optical imaging system of claim 14, whereinthe fifth lens has positive refractive power.
 16. The optical imagingsystem of claim 15, wherein the fifth lens has a concave object-sidesurface and a convex image-side surface.